The Solar System Could Collapse Because Of A Passing Star, Scientists Warn

Scientists have warned that the planets in our solar system might crash if Neptune's orbit is altered by only 0.1 percent by a passing star.

The study, which was published in the Monthly Notices of the Royal Astronomical Society, shows that a "stellar flyby" - a relatively typical occurrence in the cosmos - might be sufficient to cause planets to collide.

If Mercury and Jupiter's perihelion — the moment at which the planets are closest to the Sun — occur simultaneously, two outcomes are conceivable. Mercury's orbit might be perturbed, causing it to either exit the Solar System or collide with Venus, the Sun, or the Earth.

These alterations will occur over millions of years, but the researchers recreated the condition around three thousand times.

In over 2,000 of them, 26 concluded with the planets colliding, or Uranus, Neptune, or Mercury are entirely expelled from the Solar System.

“The full extent that stellar flybys play in the evolution of planetary systems is still an active area of research. For planetary systems that form in a star cluster, the consensus is that stellar flybys play an important role while the planetary system remains within the star cluster”, Garett Brown, a graduate student of computational physics from the Department of Physical and Environmental Sciences (PES) at the University of Toronto.

“This is typically the first 100 million years of planetary evolution. After the star cluster dissipates the occurrence rate of stellar flybys dramatically decreases, reducing their role in the evolution of planetary systems.”

In addition, given that the Sun will certainly expand and swallow the Earth in five billion years, the possibility that this would disturb our experience in the Solar System is "not an issue we need to worry about," according to Brown.

Reference(s): Peer-Reviewed Research

Astrobiologists Say Planet Earth Itself Might Actually Be An Intelligent Being

Welсome to our Chаpel, where we brіng you the lаtest dіscoverіes іn the vаst Unіverse.

In todаy’s vіdeo, we wіll dіscuss the fаscinаting toрic leаving you іn аwe: ѕcientiѕtѕ hаve dіscovered рlanets thаt аre even better for lіfe thаn Eаrth.

Yeѕ, you heаrd іt rіght.

In thіs vіdeo, we wіll dіve іnto the toр 13 рlanets thаt сould рotentially hoѕt lіfe.

If you’re lookіng for а new аdventure аnd not аfrаid of а long journey, one of theѕe рlanets mіght be your рerfect deѕtination.

Pаck your bаgs аnd blаst off to the moѕt Eаrth-like Alіen Plаnet yet dіscovered.

Remember to hіt the Subѕcribe button, lіke the vіdeo, аnd leаve а сomment below аbout thіs mіnd-blowіng toрic.

And truѕt uѕ, one of theѕe рlanets wіll ѕurpriѕe you the moѕt.

The іdea of ѕwitching рlanets іs рossible.

Let’ѕ get ѕtarted.

Keрler 57151 – Koі 5715.01.

In 2014, the Keрler ѕpacecraft dіscovered аn exoрlanet, Koі 5715.01, loсated аpproximаtely 3,000 lіght yeаrs from Eаrth.

Thіs рlanet іs ѕimilar іn ѕize аnd сomposition to Eаrth аnd hаs three сritiсal сomponents neсessary to ѕupport lіfe.

Whаt mаkes Koі 5715.01 рarticularly іntrіguіng іs thаt іt orbіts а ѕtar ѕimilar to our Sun, known аs Koі 5715.

It іs loсated іn the Goldіlocks regіon of іts ѕtar, where the рlanet’s dіstance from the ѕtar іs juѕt rіght to аllow the рresence of lіquіd wаter, whіch іs neсessary for Lіfe аs we know іt.

Whіle Koі 5715.01 mаy be ѕlightly сolder thаn Eаrth, wіth аn аverаge ѕurface temрerature eѕtimated to be аround 4.3 degreeѕ Fаhrenheit, а greenhouѕe effeсt сould rаise іts temрerature to ѕupport lіfe.

Addіtіonally, іts lаrger ѕize сompared to Eаrth сould аllow for rіcher bіodіversіty.

Koі 5750 18.01 іs аpproximаtely 5.5 bіllіon yeаrs old, mаking іt older thаn Eаrth.

The іdea of а рlanet beіng more ѕuitable for lіfe thаn Eаrth mаy ѕeem ѕurpriѕing.

Stіll, іt hіghlіghts the іmportance of underѕtanding the vаrious envіronmental сonditions thаt сould ѕupport lіfe іn the unіverse.

Keрler 69с.

Keрler 69с іs аn exoрlanet dіscovered іn 2013 by NASA’ѕ Keрler ѕpacecraft.

It’ѕ only 2,700 lіght yeаrs аwаy from Eаrth.

Keрler 69с іs а reаl ѕtar іn іts own rіght.

It’ѕ 70 рercent bіgger thаn our Eаrth аnd the ѕmalleѕt known exoрlanet to orbіt іn а hаbitаble zone of а ѕtar lіke our Sun.

Even though іt’s further from іts ѕtar thаn Eаrth іs from the Sun, Keрler-69c сould ѕtill be hаbitаble beсause іt hаs аn equіlіbrіum temрerature сlose to whаt we hаve here on Eаrth.

Thаt meаns іt’s not too hot or too сold for lіfe to exіst.

Keрler-69c іs а ѕuper Eаrth exoрlanet thаt orbіts а g-tyрe ѕtar.

Itѕ mаss іs 3.57 tіmes thаt of Eаrth аnd іt tаkes 242.5 dаys to сomplete one orbіt аround іts ѕtar.

To be hаbitаble, Keрler-69c would need ѕome іnsulatіng аtmosphere.

Whіle іt mаy not hаve аs muсh аtmosphere аs Eаrth, іt сould ѕtill hаve enough to mаke іt а сomfortable home for Lіfe.

Aссording to аn іndex develoрed іn 2015, Keрler-69c іs more lіkely to be hаbitаble thаn а hyрothetical Eаrth twіn wіth рhysical аnd orbіtal рarameters mаtching thoѕe of Eаrth.

Keрler-69 mіght even be better thаn Eаrth when іt сomes to ѕupporting lіfe.

Sрeculos 2с, а рlanet wіth а ѕeriouѕly funky ѕchedule.

Thіs Celeѕtial body tаkes 8.4 dаys to orbіt іts ѕtar аnd іt’s tіdally loсked, whіch meаns one ѕide аlwаys fаces the ѕtar whіle the other remаins іn the dаrk.

Sрeculos 2с іs аlso а gіant wіth а 30 to 40 рercent rаdius lаrger thаn Eаrth’s.

It’ѕ loсated аround 100 lіght yeаrs аwаy from uѕ іn the сonstellation Arіdness.

Sрeculos 2с іs orbіtіng а red dwаrf ѕtar.

Itѕ рosition іn the ѕtar’ѕ hаbitаble zone meаns іt сould hаve envіronmental сonditions ѕuitable for lіfe.

Keрler 1126B

Keрler 1126 B. Eрler 1126b іs а ѕuper Eаrth exoрlanet thаt’s orbіtіng а g-tyрe ѕtar.

Itѕ mаss іs 3.64 tіmes thаt of our deаr Eаrth аnd іt only tаkes 108.6 dаys to сomplete one orbіt аround іts ѕtar.

Keрler 1126b іs loсated аt а dіstance of 0.1426 аstronomicаl unіts from іts ѕtar.

1 AU іs the аverаge dіstance from the Eаrth to the Sun for аll you ѕpace newbіes.

So thіs lіttle ѕuper Eаrth іs рractically сuddling uр to іts ѕtar.

Glіese 667 CC – Glіese 667 Cс.

The otherworldly рlanet іs loсated wіthіn the hаbitаble zone of іts ѕtar, Glіese 667с, рart of the Glіese 667 trіple ѕtar ѕyѕtem, аpproximаtely 23.62 lіght yeаrs аwаy from the Sсorpius сonstellation.

Thаt’s fаr аwаy.

Wіth а rаdius of 9811.3 kіlometers, іt’s roughly 1.5 tіmes the ѕize of the Eаrth аnd hаs аn orbіtal рeriod of juѕt 28 dаys.

Thаt’s rіght.

A yeаr on thіs рlanet іs only а month long.

Glіese 667сс іs juѕt the rіght dіstance from іts ѕtar, reсeiving the рerfect energy for lіquіd wаter to exіst on іts ѕurface, аnd where there’ѕ wаter, there’ѕ а рotential for Lіfe.

Deѕpite beіng loсated over 22 lіght yeаrs аwаy from Eаrth, Glіese 667 CC hаs аn аppаrent mаgnitude of 10.22, whіch meаns іt’s juѕt bаrely vіsіble to the nаked eye under the rіght сonditions.

Keрler-22Ƅ.

Keрler-22Ƅ іs аn exoрlanet loсated аbout 600 lіght yeаrs from Eаrth іn the сonstellation of Cygnuѕ.

Thіs exoрlanet іs loсated wіthіn the hаbitаble zone of Keрler-22, а ѕtar ѕimilar to our Sun.

Keрler-22Ƅ іs orbіtіng аt juѕt the rіght dіstance from іts ѕtar where temрeratures сould аllow lіquіd wаter to exіst on іts ѕurface.

Keрler-22Ƅ hаs а rаdius of 15,290 kіlometers, whіch іs twіce the ѕize of Eаrth.

Whіle the рlanet’s mаss аnd ѕurface сomposition remаin unknown, ѕcientiѕtѕ hаve ruled out аn Eаrth-like сomposition, аs Keрler-22Ƅ іs lіkely to hаve а volаtile-rich сomposition wіth а lіquіd or gаseous outer ѕhell.

Don’t exрect to fіnd аny Roсky Mountаins or ѕandy beаches here.

Keрler 62f – Keрler-62f.

Thіs ѕuper Eаrth exoрlanet orbіts wіthіn the hаbitаble zone of the ѕtar Keрler-62, аnd іt’s the outermoѕt of fіve рlanets dіscovered by NASA’ѕ Keрler ѕpacecraft, аt аbout 990 lіght yeаrs from Eаrth іn the сonstellation of Lyrа.

Keрler-62f іs аncient, аt а whoррing 7.005 bіllіon yeаrs old.

Wіth а rаdius of 8,983.1 kіlometers, Keрler-62f іs lаrger thаn Eаrth but ѕmaller thаn Neрtune аnd Urаnus.

It tаkes 267 dаys for thіs exoрlanet to сomplete one orbіt аround іts ѕtar, аnd іt wаs fіrst dіscovered on Aрril 18, 2013.

Keрler-62f сould hаve а moderаtely thіck аtmosphere mаde moѕtly of CO2, wіth аn equіlіbrіum temрerature of 208 Kelvіn mіnus 65 degreeѕ Celѕiuѕ, mіnus 85 degreeѕ Fаhrenheit.

It’ѕ сhilly, but ѕtill іn the rаnge of whаt ѕcientiѕtѕ belіeve to be hаbitаble.

Keрler 186f

Keрler 186f. Keрler-186f іs а fаscinаting exoрlanet loсated аbout 580 lіght yeаrs аwаy from Eаrth, dіscovered on Aрril 17, 2014, by Alyѕѕa Quіntana uѕing the Keрler ѕpace teleѕcope.

It wаs the fіrst exoрlanet found іn the hаbitаble zone of аnother ѕtar wіth а rаdius ѕimilar to Eаrth’s.

Thіs exсiting dіscovery сonfirmed thаt Eаrth-sized рlanets exіst іn the hаbitаble zoneѕ of other ѕtarѕ, brіngіng uѕ one ѕtep сloser to fіndіng а рlanet ѕimilar to our own.

Wіth а rаdius of 7,454.1 kіlometers, Keрler-186f іs аbout 1.11 tіmes lаrger thаn Eаrth аnd іts eѕtimated mаss would be 1.44 tіmes thаt of Eаrth іf іt hаs аn Eаrth-like сomposition.

The рlanet hаs аn orbіtal рeriod of 130 dаys аnd іts ѕurface temрerature, wіthout аn аtmosphere, іs eѕtimated to be аround 188 Kelvіn, whіch іs сooler thаn Mаrs.

Although the ѕize of Keрler-186f іs leѕѕ thаn 10 рercent lаrger thаn Eаrth, іts mаss сomposition аnd denѕity аre not yet known, mаking іt аn іntrіguіng objeсt of ѕtudy for аstronomers.

Keрler 442Ƅ.

Keрler-442Ƅ іs а сonfirmed near-Earth-sized exoрlanet wіth а rаdius of 8,537.1 kіlometers thаt orbіts wіthіn the hаbitаble zone of the K-tyрe mаin ѕequence ѕtar Keрler-442, loсated аbout 1,206 lіght-years аwаy from Eаrth іn the сonstellation Lyrа.

The Keрler ѕpace teleѕcope dіscovered on Jаnuаry 6, 2015, thаt Keрler-442Ƅ іs one-thіrd lаrger thаn Eаrth аnd reсeives two-thіrds of the lіght thаt reаches our рlanet.

Wіth а mаss of 2.36 tіmes thаt of Eаrth, іt tаkes 112.3 dаys to сomplete one orbіt of іts ѕtar аnd іs 0.409 AU from іts ѕtar.

There іs а 97 рercent сhanсe thаt Keрler-442Ƅ іs іn а hаbitаble zone, mаking іt аn exсiting objeсt of ѕtudy for аstronomers.

The рlanet mаy аlso hаve а thіck аtmosphere, wіth сlouds сovering moѕt of the ѕurface, but іts сomposition hаs yet to be dіscovered.

It іs unlіkely thаt the аtmosphere іs mаde uр of the ѕame mіx of oxygen аnd nіtrogen аs Eаrth’s аtmosphere, whіch meаns іt іs unсertain whether іt іs рossible to breаthe the аir there.

Nonetheleѕѕ, Keрler-442Ƅ’s dіscovery рrovides аstronomers wіth vаluаble іnformatіon on the рossibility of hаbitаble exoрlanets beyond our ѕolar ѕyѕtem.

Keрler 452Ƅ.

Keрler-452Ƅ іs а ѕuper Eаrth exoрlanet orbіtіng wіthіn the hаbitаble zone of а Sun-lіke ѕtar, Keрler-452.

It wаs dіscovered by NASA’ѕ Keрler mіssіon іn July 2015 аnd іs loсated аbout 1,800 lіght yeаrs аwаy from Eаrth іn the сonstellation Cygnuѕ.

The рlanet іs 60 рercent lаrger іn dіameter thаn Eаrth, mаking іt the fіrst near-Earth-sized world to be found іn the hаbitаble zone of а ѕtar ѕimilar to our Sun.

Wіth а mаss of 3.29 tіmes thаt of Eаrth, іt hаs а good сhanсe of beіng а roсky рlanet.

Keрler-452Ƅ hаs аn orbіtal рeriod of 385 dаys аnd аn orbіtal rаdius of 1.046 AU.

Itѕ grаvity іs 18.63 meterѕ ѕquared, аnd іts rаdius іs 1.63 tіmes Eаrth’s.

Keрler-452Ƅ іs the only рlanet dіscovered іn the Keрler-452 ѕyѕtem аnd іs сonsidered Eаrth’s bіgger, older сousin, beіng juѕt 1.6 tіmes lаrger thаn Eаrth аnd іn а ѕimilar orbіt аround а ѕimilar ѕtar to our Sun.

Keрler 1649с.

Keрler 1649с іs а fаscinаting exoрlanet thаt hаs сaptured the аttention of аstronomers worldwіde.

It іs аn Eаrth-sized рlanet loсated wіthіn the hаbitаble zone of а red dwаrf ѕtar, Keрler 1649, loсated аbout 300 lіght yeаrs аwаy from the сonstellation Cygnuѕ.

The рlanet wаs dіscovered on Aрril 15, 2020, by the Keрler ѕpacecraft.

Keрler 1649с hаs а rаdius of 6,753.3 kіlometers аnd аn orbіtal рeriod of juѕt 20 dаys.

Itѕ ѕurface temрerature іs eѕtimated аt аround -39 degreeѕ Celѕiuѕ, -38 degreeѕ Fаhrenheit, but thіs сould dіffer deрending on the аtmosphere.

Keрler 1649с reсeives 75 рercent of Eаrth’s lіght from the Sun, whіch meаns there іs а рossibility of lіquіd wаter beіng рresent on іts ѕurface.

Proxіma Centаuri B.

Proxіma Centаuri B іs аn exoрlanet loсated іn the hаbitаble zone of the сlosest ѕtar to the Sun, Proxіma Centаuri, whіch іs рart of the Alрha Centаuri trіple ѕtar ѕyѕtem dіscovered іn 2016.

Proxіma Centаuri B іs а ѕuper Eаrth exoрlanet wіth а mаss of 1.07 tіmes thаt of Eаrth аnd аn orbіtal рeriod of 11.2 dаys.

The рlanet’s dіstance from іts ѕtar рlaces іt wіthіn the hаbitаble zone, mаking іt а рotential сandidate for the exіstence of lіquіd wаter on іts ѕurface.

Whіle reѕearch on the рlanet іs ongoіng, ѕome ѕtudieѕ ѕuggeѕt thаt Proxіma Centаuri B іs а vіable сandidate for beіng а hаbitаble рlanet.

However, muсh more reѕearch іs needed to determіne whether the рlanet hаs the rіght сonditions to ѕupport lіfe.

Trаppist-1e.

Trаppist-1e іs one of the ѕeven exoрlanets orbіtіng the ultrа-cool red dwаrf ѕtar Trаppist-1, loсated аbout 40 lіght yeаrs from Eаrth.

It wаs fіrst dіscovered іn 2016 by Belgіan ѕcientiѕtѕ аnd іs roughly the ѕame ѕize аs Eаrth.

Trаppist-1e іs рart of а unіque рlanetary ѕyѕtem thаt offerѕ аn oррortunity to ѕtudy the formаtion аnd evolutіon of terreѕtrial рlanets.

In 2021, а ѕtudy reveаled thаt the Trаppist-1 рlanets аre lіkely mаde of ѕimilar mаteriаls but dіfferent from Eаrth іn іmportant wаys.

Deѕpite theіr dіfferences, theѕe рlanets offer tаntаlizing рrosрects for the ѕearch for lіfe beyond our ѕolar ѕyѕtem.

Thаnk you for joіnіng uѕ todаy аnd leаrning аbout theѕe fаscinаting exoрlanets.

I hoрe you found thіs іnformatіon іnformatіve аnd іnterestіng.

If you’ve enjoyed thіs сontent, рlease follow uѕ for more uрdates lіke thіs рost аnd leаve а сomment below wіth аny queѕtionѕ or feedbаck.

See you next tіme.

There is a "Highly Habitable" Planet Just 4 light years from Us, Astronomers Say

A nearby exoplanet orbiting within the habitable zone of a star just 4.2 light-years from Earth may be home to a vast ocean, boosting its chances of supporting life. 

Since its discovery, questions about the conditions at the surface of Proxima b have been swirling; the planet’s mass is just about 1.3 times that of Earth’s, and the red dwarf star it circles is similar in age to our sun.

Studies over the last few years, however, have both bolstered hopes of its habitability and shot them down. Now, a new study has once again raised the possibility that Proxima b could support life, suggesting that under the right conditions, the exoplanet could sustain liquid water.

“The major message from our simulations is that there’s a decent chance that the planet would be habitable,” Anthony Del Genio, a planetary scientist at the NASA Goddard Institute for Space Studies, told LiveScience.

Since its discovery, questions about the conditions at the surface of Proxima b have been swirling; the planet's mass is just about 1.3 times that of Earth's, and the red dwarf star it circles is similar in age to our sun. Artist's impression

In the study published this month in the journal Astrobiology, the researchers ran what are said to be the first climate simulations of Proxima b with a dynamic ocean. The planet is thought to be tidally locked with its star, Proxima Centauri, meaning it would have a permanent ‘dayside’ and ‘nightside.’

While any water on the side left in the dark would be frozen, that’s not necessarily the case for the other side.

“Climate models with static oceans suggest that Proxima b could harbor a small dayside surface ocean despite its weak instellation,” the researchers explain in the new study. “With a dynamic (moving) ocean considered for the first time, the extent of this liquid water becomes much more significant, in some cases even dipping into parts of the nightside. 

The simulations showed that ‘with a dynamic ocean, a hypothetical ocean-covered Proxima Centauri b with an atmosphere similar to modern Earth’s can have a habitable climate with a broad region of open ocean, extending to the nightside at low latitudes.”

The researchers modelled for different salinity levels and atmospheric greenhouse gas concentrations as well, each of which could play into the size of the liquid regions. In more than a dozen simulations, the team found the exoplanet almost always had some sort of liquid ocean. But, don’t get excited to take a dip just yet.

“We find that an ocean-covered Proxima b could have a much broader area of surface liquid water but at much colder temperatures than previously suggested, due to ocean heat transport and/or depression of the freezing point by salinity,” the researchers wrote.

Reference(): Astrobiology

At 2.2 Billion Years Old, This is the Oldest Impact Crater on Earth

Around 2.2 billion years ago, a massive space rock collided against our planet, leaving a massive scar.

Around 200 million years older than any other site like it on the planet’s surface, the so-called Yarrabubba impact structure is located in Australia.

Although the impact site is the oldest found to date, finding it was not easy.

Our planet’s surface is continually changing due to tectonic activity and erosion, making it very difficult to date ancient impact craters.

This is precisely the case of the 70 km-wide Yarrabubba crater in Western Australia, which lacked a precise age but was nonetheless considered one of the oldest on our planet.

In a study published on January 21 in Nature Communications, the researchers revealed studying the massive impact site. Although today not much of it is visible, what lies inside it holds invaluable information about the crater and its age. At the center of the impact, the crater is a small, red hill dubbed Barlangi Hill.

“[Barlangi Hill] has been interpreted as an impact-generated melt rock,” the researchers wrote in the study.

The researchers analyzed minerals crystallized by the impact. They performed an isotopic analysis – to understand the chemical reactions – of the zircon and monazite minerals to obtain the precise age.

The impact crater

A view of the Yarrabubba impact crater: Image Credit: The Conversation.

Consequently, using a uranium-lead dating technique, the scientists discovered that the Yarrabubba impact crater is 200 million years older than the next oldest recognized impact crater, the Vredefort crater in South Africa.

If the impact crater’s dating is accurate, it means that the collision of the massive space rocks coincided with the end of a prehistoric ice age when most of our planet was frozen.

The researchers created many models that allowed them to study the possible effects of a massive asteroid impact, the possible effects it would have on an ice sheet, and how it would modify the planet’s climate.

If an asteroid really did impact a continent’s ice sheet, it likely kicked up massive amounts of rock, ash, dust, similar to a volcanic eruption.

Computer simulations have shown an impact like that would have spread between 87 trillion and 5,000 trillion kilograms of water vapor into the planet’s atmosphere. This most likely caused the ice sheet to melt since water is an efficient greenhouse gas.

“If the impact occurred into an ice sheet then it would release lots of water vapor, which is an even more efficient greenhouse gas than carbon dioxide,” lead study author Timmons Erickson, of NASA’s Johnson Space Center, explained in an interview with the AFP.

“That, in turn, may result in warming of the planet."

However, the above is just one possible scenario, and the exact conditions are still heatedly debated. Whatever the case, impact-craters like Yarrabubba are of great importance to scientists, offering valuable data and insight on what our planet looked like billions of years ago.

Check Out This Stunning 80-Trillion-Pixel Cloudless View Of Earth

Two satellites' data provide a breath-taking cloudless view of Earth, complete with an astonishing 80 trillion pixels.

The mosaic of photos was captured by the Sentinel-2 satellites, which are operated by the European Space Agency (ESA) and consist of two spacecraft: Sentinel-2A (launched on June 23, 2015) and Sentinel-2b (March 7, 2017). 

The two satellites are orbiting at a height of around 790 kilometres (490 miles). EOX, a German mapping company, pieced the mosaic together.

To ensure that the mosaic was cloud-free, the photos for each region were captured at various times. They were collected between May and September 2016 in the Northern Hemisphere, and from November 2016 to March 2017 in the Southern Hemisphere. From May 2016 to April 2017, the tropical regions are depicted.

“To have a visually appealing mosaic, it is desired to show the Earth during summer, when vegetation reaches its annual peak,” explained Joachim Ungar, Lead Cartographer at EOX, in a blog post.

The team used 250 terabytes of data from the Sentinel-2 satellites to put the mosaic together. They now hope to get greater cover over Asia and the Americas thanks to the launch of Sentinel-2b.

Check out some of the stunning images from the mosaic below, and view a full scrollable version right here.

The Sun has 8 billion years left, Earth has even less; As per data reveals by ESA

The sun will not last forever. Scientists can foresee the future of the star that gives energy to our solar system. However, we will not be alive to witness it.

The ESA's Star Mapping GAIA project now provides a glimpse into the Sun's future by detecting stars of similar mass and composition and forecasting how our Sun will evolve in the future. Despite the fact that the Earth has less time than the Sun, let us investigate what will happen in the future.

We already know that the Sun is powered by 'nuclear fusion.' Over the next few billion years, the Sun will continue to heat up, eventually depleting the hydrogen at its core. The core would then contract, bringing the hydrogen together to create the nucleus.

While the core is contracting, the Sun's outer atmosphere begins to expand significantly, consuming Earth and even engulfing Mars, transforming the Sun into a red giant.

When the Sun's core runs out of hydrogen and helium, it will eject all of its outer material, becoming a planetary nebula, while the core collapses into a white dwarf.

While this is based on how other stars have grown over time, it is crucial for Earth dwellers to have an idea about our planet's and the Sun's destiny.

Figure 1. Sky map of stellar age obtained for Gaia Data Release 3, showing the average age of the stars in our Galaxy, with blue representing the younger stars and red representing the older stars. Most of the oldest stars are found outside the galactic disk. The age was derived with the Final Luminosity Age Mass Estimator (FLAME). Shown in this map is a random selection of 10 million stars from Gaia DR3. Credits: ESA/Gaia/DPAC - CC BY-SA 3.0 IGO. Acknowledgements: created by O.Creevey, M. Fouesneau, and the Gaia group at MPIA.

The third and most recent data release (DR3) from ESA's GAIA mission sheds light on the Sun's life cycle. "One of the key results of this release was a database of millions of stars' intrinsic attributes. These factors include their temperature, mass, and the amount of mass they contain."

 

Figure 2. Hertzsprung-Russell diagram with young massive star sample (OBA), intermediate mass sample (FGKM), low-mass ultra-cool dwarfs (UCD), evolved carbon-rich stars and solar analogues. Credits: ESA/Gaia/DPAC - CC BY-SA 3.0 IGO, based on Gaia Collaboration, Creevey, et al. 2022.

The GAIA mission takes precise readings of the star's apparent brightness and colour from Earth and plots them on a single diagram known as the Hertzsprung-Russell (H-R) diagram. 

An HR diagram plots a star's intrinsic brightness against its effective surface temperature. It reveals how stars change over their long life cycles in this way.

While the mass of a star changes very little over its lifetime, the temperature and size of the star change as it matures, due to the sorts of nuclear fusion events that occur in the core.

Our Sun is at its middle age and stationary condition at 4.57 billion years old. However, as the Sun ages, this stability will change. That's where the most recent GAIA mission data (DR3) comes in.

Orlagh Creevey of the Observatoire de la Côte d'Azur in France and colleagues from Gaia's Coordination Unit 8 analysed the data for the most precise stellar observations that the satellite could provide.

Figure 3: The Gaia DR3 RVS spectra of 1046 solar analogues. Outer grey contour includes 90% of the sample. Inner grey contour contains 68% of the sample. The most prominent absorption lines are marked with vertical dashed lines. Credits: ESA/Gaia/DPAC - CC BY-SA 3.0 IGO. The image is adapted from the one presented in Gaia Collaboration, Creevey et al. 2022. Acknowledgements: Rene Andrae, Andreas Korn, Orlagh Creevey, Georges Kordopatis, Rosanna Sordo.

They concentrated their attention on stars with surface temperatures ranging from 3000K to 10000K since they are similar to the Sun, which has a surface temperature of 6000K.

Furthermore, because these are the longest-living stars in the Milky Way, they can tell the Milky Way's history. They are also promising candidates for the discovery of exoplanets.

The scientists then filtered the results to display only stars with masses and chemical compositions similar to the Sun. The stars they chose traced a line in the H-R diagram that portrays our Sun's evolution from its past to its future because they allowed ages to vary. This implies that the Sun's temperature and brightness change as we age.

According to the findings, our Sun will reach its maximum temperature about 8 billion years old, then cool and expand in size, becoming a red giant star approximately 10-11 billion years old.

After this stage, the Sun will approach the end of its life and become a faint white dwarf.

How long will Earth be nearby?

While it is 8 billion years ahead of the Sun, Earth's duration of time is significantly shorter, at 1 billion years. This is due to the Sun's brightness and temperature growing by 10% per billion years; while 10% may seem insignificant, it would heat Earth sufficiently to make it livable for any form of life.

Orlag and his colleagues sought stars with similar temperatures, surface gravity, composition, mass, and radius to the Sun. He received 5863 stars that fit his criterion.

It also gives a ray of optimism to our way of existence, because there is always the possibility of discovering livable planets like Earth among these 5863 stars like our Sun.

We don't know if there is a planet that could support life right now, but we're looking.

Reference(s): ESA and GAIA Mission

Alien Mineral Harder Than Diamond was recently Found In Israel

Geologists and the general public are both amazed by the discovery of a totally new mineral this week by the precious stone mining business Shefa Yamim in northern Israel.

Image description: Carmeltazite, often known as "Carmel Sapphire," could be marketed as a mineral more valuable than diamonds.

The mineral was discovered encrusted in sapphire while mining in volcanic rock in northern Israel's Zevulun Valley near Mt. Carmel and was appropriately dubbed "carmeltazite" after the location of its discovery. It was discovered to be tougher than diamond during density testing.

Carmeltazite resembles ruby and sapphire in appearance and chemical makeup, yet it is unlike any other sapphire found in the globe. In fact, the material had previously only been discovered in outer space.

It was difficult to mine and identify since the business discovered it trapped within or in the fractures of jewels within volcanic rock on Mount Carmel.

Carmeltazite has a distinct crystal structure.

It was formed by volcanic explosions in Cretaceous, dinosaur-ruled Israel along the Carmel crest, when 14 volcanic vents were regularly shooting out lava that eroded and drowned the Mediterranean.

So far, the largest stone discovered weighs 33.3 carats.

The material has been patented as "Carmel sapphire" by the Israeli business, and it has also been approved as a new mineral by the International Mineralogical Association's Commission on New Minerals. While the approval of new minerals is not uncommon, the discovery of this mineral has surprised many due to its remarkable rarity.

Though the business has mentioned certain prospective locations along Mt. Carmel for additional exploration of the mineral, it is still rarer than diamonds. "Gemstone pricing are frequently a function of rarity," said Abraham Taub, CEO of Shefa Yamim, an Israeli gemstone mining company. Carmeltazite, if delivered to the mineral market, will very certainly be far more expensive than them.

 

Reference(s): MiningWeekly

Earth Could Be Unique Among 700 Quintillion Planets in The Universe, Study Finds

So much of humanity's astronomical study is focused on finding something like us out there, whether it's looking for environments that potentially support life, ranking planets in terms of their potential habitability, or comparing faraway worlds to our own.

But what if the odds are stacked against us ever discovering another planet that is even substantially similar to Earth? That's the idea behind a recent study by an international team of academics, who used a computer model to feed what we know about exoplanets outside our Solar System.

Their calculations, which were designed to replicate how galaxies and planets evolved over 13.8 billion years, result in a "cosmic inventory" of terrestrial planets, with Earth appearing to be unique.

"It's kind of mind-boggling that we're actually at a stage where we can start doing this," Carnegie Observatories' Andrew Benson told Shannon Hall of Scientific American.

Nonetheless, the researchers admit that their projections on the spatial and temporal distribution of terrestrial planets in both the local and distant Universes are prone to a variety of inaccuracies. Especially given how little we know about exoplanets, with only roughly 2,000 discovered out of a total of 700 quintillion.

"There are undoubtedly a lot of uncertainties in a calculation like this," Benson remarked. "Our understanding of all of these parts is incomplete."

But what makes Earth so unique? The researchers don't know, but their calculations show that our world is an outlier in comparison to the great majority of other planets in the Milky Way and beyond, which they claim are older, larger, and considerably less likely to host life.

There's no way to be certain given the incredibly small data set used - even 2,000 exoplanets is a tiny sample to base projections on, given the massive number of potential worlds out there in the Universe - but the researchers describe Earth's formation and position as an unlikely incident of chance.

"[W]e would have to acknowledge that we got here through an unusual lottery draw," the scientists wrote in their research, which will be published in The Astronomical Journal. "However, perhaps there is more to the lottery than we previously realised?"

Further findings concerning the composition and position of further exoplanets could refine the predictions based on these large and highly speculative calculations. As the researchers concede, until then, their findings should be interpreted with caution.

"Whenever you find something that stands out," Erik Zackrisson of Uppsala University, one of the team members, told Scientific American, "it suggests that either we are the outcome of an extremely odd lottery draw or we don't understand how the lottery works."

Reference(s): The Astronomical Journal

The Sun has 8 billion years left, Earth has even less; As per data reveals by ESA

The sun will not last forever. Scientists can foresee the future of the star that gives energy to our solar system. However, we will not be alive to witness it.

The ESA's Star Mapping GAIA project now provides a glimpse into the Sun's future by detecting stars of similar mass and composition and forecasting how our Sun will evolve in the future. Despite the fact that the Earth has less time than the Sun, let us investigate what will happen in the future.

We already know that the Sun is powered by 'nuclear fusion.' Over the next few billion years, the Sun will continue to heat up, eventually depleting the hydrogen at its core. The core would then contract, bringing the hydrogen together to create the nucleus.

While the core is contracting, the Sun's outer atmosphere begins to expand significantly, consuming Earth and even engulfing Mars, transforming the Sun into a red giant.

When the Sun's core runs out of hydrogen and helium, it will eject all of its outer material, becoming a planetary nebula, while the core collapses into a white dwarf.

While this is based on how other stars have grown over time, it is crucial for Earth dwellers to have an idea about our planet's and the Sun's destiny.

Figure 1. Sky map of stellar age obtained for Gaia Data Release 3, showing the average age of the stars in our Galaxy, with blue representing the younger stars and red representing the older stars. Most of the oldest stars are found outside the galactic disk. The age was derived with the Final Luminosity Age Mass Estimator (FLAME). Shown in this map is a random selection of 10 million stars from Gaia DR3. Credits: ESA/Gaia/DPAC - CC BY-SA 3.0 IGO. Acknowledgements: created by O.Creevey, M. Fouesneau, and the Gaia group at MPIA.

The third and most recent data release (DR3) from ESA's GAIA mission sheds light on the Sun's life cycle. "One of the key results of this release was a database of millions of stars' intrinsic attributes. These factors include their temperature, mass, and the amount of mass they contain."

 

Figure 2. Hertzsprung-Russell diagram with young massive star sample (OBA), intermediate mass sample (FGKM), low-mass ultra-cool dwarfs (UCD), evolved carbon-rich stars and solar analogues. Credits: ESA/Gaia/DPAC - CC BY-SA 3.0 IGO, based on Gaia Collaboration, Creevey, et al. 2022.

The GAIA mission takes precise readings of the star's apparent brightness and colour from Earth and plots them on a single diagram known as the Hertzsprung-Russell (H-R) diagram. 

An HR diagram plots a star's intrinsic brightness against its effective surface temperature. It reveals how stars change over their long life cycles in this way.

While the mass of a star changes very little over its lifetime, the temperature and size of the star change as it matures, due to the sorts of nuclear fusion events that occur in the core.

Our Sun is at its middle age and stationary condition at 4.57 billion years old. However, as the Sun ages, this stability will change. That's where the most recent GAIA mission data (DR3) comes in.

Orlagh Creevey of the Observatoire de la Côte d'Azur in France and colleagues from Gaia's Coordination Unit 8 analysed the data for the most precise stellar observations that the satellite could provide.

Figure 3: The Gaia DR3 RVS spectra of 1046 solar analogues. Outer grey contour includes 90% of the sample. Inner grey contour contains 68% of the sample. The most prominent absorption lines are marked with vertical dashed lines. Credits: ESA/Gaia/DPAC - CC BY-SA 3.0 IGO. The image is adapted from the one presented in Gaia Collaboration, Creevey et al. 2022. Acknowledgements: Rene Andrae, Andreas Korn, Orlagh Creevey, Georges Kordopatis, Rosanna Sordo.

They concentrated their attention on stars with surface temperatures ranging from 3000K to 10000K since they are similar to the Sun, which has a surface temperature of 6000K.

Furthermore, because these are the longest-living stars in the Milky Way, they can tell the Milky Way's history. They are also promising candidates for the discovery of exoplanets.

The scientists then filtered the results to display only stars with masses and chemical compositions similar to the Sun. The stars they chose traced a line in the H-R diagram that portrays our Sun's evolution from its past to its future because they allowed ages to vary. This implies that the Sun's temperature and brightness change as we age.

According to the findings, our Sun will reach its maximum temperature about 8 billion years old, then cool and expand in size, becoming a red giant star approximately 10-11 billion years old.

After this stage, the Sun will approach the end of its life and become a faint white dwarf.

How long will Earth be nearby?

While it is 8 billion years ahead of the Sun, Earth's duration of time is significantly shorter, at 1 billion years. This is due to the Sun's brightness and temperature growing by 10% per billion years; while 10% may seem insignificant, it would heat Earth sufficiently to make it livable for any form of life.

Orlag and his colleagues sought stars with similar temperatures, surface gravity, composition, mass, and radius to the Sun. He received 5863 stars that fit his criterion.

It also gives a ray of optimism to our way of existence, because there is always the possibility of discovering livable planets like Earth among these 5863 stars like our Sun.

We don't know if there is a planet that could support life right now, but we're looking.

Reference(s): ESA and GAIA Mission

Sun is Older Than The Earth But The Water You Drink is Older Than The Sun

Remember that some of the molecules in your "fresh" sip of water are actually billions of years old—far older than the solar system itself.

It looks doubtful that water existed on Earth before the solar system in which it is located. However, a recent peer-reviewed study published in the journal Science supports this.

Astronomers arrived at this conclusion by demonstrating that water in our solar system had to have been produced inside the huge cloud of gas and dust that preceded and was required for the creation of the star known as the Sun. This implies that water existed before the Sun exploded into a star, water that eventually made its way to Earth via "wet rocks" such as asteroids or comets.

Ted Bergin, an astronomy professor at the University of Michigan in Ann Arbor, is one of the study's authors. Looking back 4.6 billion years, he thinks there is "a magnificent narrative to be told."

Tiny particles smaller than the diameter of a human hair were employed to construct the Earth. This is referred to as "dust" by astronomers, who, according to Bergin, are "very imaginative people."

These dust particles would collect so much energy at this distance from the Sun that they would become too hot for water to form as ice on them. According to Bergin, this shows that the Earth was dry when it was created. Now here's an intriguing conundrum: where did the water come from?

Bergin thinks that a broader question must be asked: Where did the water in the cosmos come from? "The cosmos is made of atoms, not water," he claims. As a result, those atoms in the universe linked together through chemistry at some point in time to become water.

Fortunately, astronomers can analyse that chemical using tools on Earth. They can recreate the conditions that lead to the generation of water. This is accomplished through the use of a technology known as isotope fingerprinting.

This is accomplished through the use of a technology known as isotope fingerprinting. The second type is deuterium. These elements live in a more-or-less constant ratio throughout the solar system: there are approximately 100,000 hydrogen atoms for every deuterium atom. Water may contain this much hydrogen and deuterium.

Chemistry, according to Bergin, "tells us that there can be an excess of deuterium under extremely exact conditions." This is known as a "isotopic fingerprint." Deuterium is plentiful on Earth and in comets and asteroids.

The isotopic fingerprint is only observable at very low temperatures, between 10 and 20 degrees above absolute zero (-441 degrees Fahrenheit). As a result, Bergin writes, "we already know one thing: whatever the source of the water was, it was extraordinarily, incredibly cold." This is due to the Earth's deuterium surplus. As a result, we must analyse how stars and planets form and ask, "Where is it that cold?"

Temperatures this low are only possible in two places in the huge, violent system where stars first form: the protostar's surrounding cloud of gas and dust, or the accretion disc that is just beginning to form around it. However, there is one more surprise: water is also generated chemically, in a process called as ionisation. The researchers found that the disc is unable to drive it by evaluating a thorough model of this chemical occurrence.

According to Bergin, this shows that the disc, as opposed to the cloud of gas and dust, which are the two most likely sources of water, is unable to do so. Given this, water with an isotopic signature could only have originated from gas and dust about a million years before the sun.

However, this begs the question of how this water ended up on Earth. According to Bergin, planets are formed from the same cloud of gas and dust that compresses and bursts into flame to form a star.

The cloud launched rocks into space, where they collided with the subatomic particles that eventually became Earth. They collided with the Earth and fused with it despite the fact that some of them lacked water. More stones were tossed our way from a distance; these pebbles were chilly enough to hold water.

Therefore, Bergin claims, “when the Earth was birthing, these boulders from larger distances provided the water.” The seas, the atmosphere, and the lovely world we have today were all produced as a result of the water that had previously been a component of the rocks simply evaporating through volcanoes.

Reference(s): Peer-reviewed research paper, Space.com

A Supermassive Black Hole Is Heading Earth’s Way At 110 KM Per Second

A black hole millions of times the mass of the sun is rushing towards Earth, threatening to wipe out life as we know it. The black hole is travelling at 110 kilometres per second towards us and is located at the centre of the Andromeda Galaxy, the Milky Way's nearest and much larger neighbour. A supermassive black hole at the centre of most galaxies is surrounded by stars and helps keep everything in place.

However, due to the enormous gravitational pull of the Milky Way and Andromeda, they are being dragged toward each other and will collide one day. "There's a black hole in the centre of the Milky Way," writes Fraser Cain, publisher of the astronomy website Universe Today, for Phys.org.

“And not just any black hole, it’s a supermassive black hole with more than 4.1 million times the mass of the Sun. It’s right over there, in the direction of the Sagittarius constellation.  Located just 26,000 light-years away. And as we speak, it’s in the process of tearing apart entire stars and star systems, occasionally consuming them, adding to its mass like a voracious shark.”

However, due to the enormity of Andromeda, there will only be one winner when it collides with the Milky Way. However, because Andromeda is 2.5 million light years away, it will take more than four billion years to reach us, so we are secure for the time being.

Mr Cain said: “Panic will happen when the Milky Way collides with Andromeda in about 4 billion years. Suddenly, you’ll have two whole clouds of stars interacting in all kinds of ways, like an unstable blended family. Stars that would have been safe will careen past other stars and be deflected down into the maw of either of the two supermassive black holes on hand. Andromeda’s black hole could be 100 million times the mass of the Sun, so it’s a bigger target for stars with a death wish.”

Check Out This Stunning 80-Trillion-Pixel Cloudless View Of Earth

Two satellites' data provide a breath-taking cloudless view of Earth, complete with an astonishing 80 trillion pixels.

The mosaic of photos was captured by the Sentinel-2 satellites, which are operated by the European Space Agency (ESA) and consist of two spacecraft: Sentinel-2A (launched on June 23, 2015) and Sentinel-2b (March 7, 2017). The two satellites are orbiting at a height of around 790 kilometres (490 miles). EOX, a German mapping company, pieced the mosaic together.

To ensure that the mosaic was cloud-free, the photos for each region were captured at various times. They were collected between May and September 2016 in the Northern Hemisphere, and from November 2016 to March 2017 in the Southern Hemisphere. From May 2016 to April 2017, the tropical regions are depicted.

“To have a visually appealing mosaic, it is desired to show the Earth during summer, when vegetation reaches its annual peak,” explained Joachim Ungar, Lead Cartographer at EOX, in a blog post.

The team used 250 terabytes of data from the Sentinel-2 satellites to put the mosaic together. They now hope to get greater cover over Asia and the Americas thanks to the launch of Sentinel-2b.

Check out some of the stunning images from the mosaic below, and view a full scrollable version right here.