They now say in outer ridges of our galaxy there is planets 5 billion years older than Earth
Could it be that Jupiter and Saturn also came from elesewhere and were grabbed by our Sun's gravity well and are now here, protecting Earth from stream of comets?
There is actually no consensus that Juputer and Saturn are the same age as Earth. Only Earths age have been determined with any great accuracy.
https://www.space.com/oldest-milky-way-continents-5-billion-years-older-than-earth
Because 5 billion years of additional time is a long time, there may be multiple worlds in the Milky Way harboring alien life even more advanced than our own.
Astrobiologists think a planet
>needs to have certain features to support life: oxygen in its atmosphere,
something to shield organisms from dangerous radiation and liquid water, for a start. Although big land masses aren't strictly necessary for living things to emerge, Earth's history shows that they're important for life to thrive and exist for long periods of time.
So, if an exoplanet had continents before Earth, it follows that there might be older, more advanced life on that world.
This line of thought led Jane Greaves, an astronomer at Cardiff University astronomer in the U.K., to answer the question: When did the first continents appear on a planet in our galaxy? Turns out, two exoplanets' continents — and perhaps life — may have arisen four to five billion years before Earth's.
Continents form due to plate tectonics, the movement of plates of rock that float atop the molten innards of a planet. Heat from a planet's core keeps that magma from hardening and halting continents' movement. That heat comes from radioactive elements — like
>uranium-238, thorium-232,
and potassium-40 — in the planet's core, which give off energy as they decay.
Most of those radioactive elements came from catastrophic cosmic events, like supernova explosions and collisions between the dead husks of giant stars, known as neutron stars. Traces of those elements can be detected in the wavelengths of light that stars emit. In her new work, Greaves used levels of uranium-238 and potassium present in nearby stars, plus the ages of stars as measured by the Gaia satellite, to estimate when a hypothetical rocky planet around each of these stars became hot enough for plate tectonics to emerge.
She found that the first continents formed around nearby sun-like stars up to 2 billion years earlier than Earth's plate tectonics began. The oldest continents of a nearby star are around HD 4614, about 20 light-years from Earth. Earth's starting time, however, is average for our cosmic neighborhood.
Two stars stand out from the pack, though: The planets of two stars a bit smaller than our sun (HD 76932 and HD 201891), located 70 to 110 light-years away from us respectively in a region known as the "thick dick", could have formed continents up to 5 billion years earlier than us. Based on her sample of just 29 stars and astronomers' current best estimates for how likely a planet is to be habitable, Greaves wrote, "there could be two systems in this sample alone with biospheres more advanced than here on Earth."
Determining potentially interesting and habitable planets, like these identified by Greaves, is crucial preparation for NASA's future Habitable Worlds Observatory, which astronomers will use to observe Earth-like planets — and hopefully signs of life — in the 2040s. Greaves hopes future work will analyze more stars to determine if they could have planets with plate tectonics, which, she wrote, "could help to uncover more old systems where life on land could pre-date that on Earth."
You are never ever leaving this enclosed plane.
The bible is fake and gay.
tgd
>total
>globenagger
>death
>she
so made up muh woman bs
kys op homosexual
https://www.space.com/nasa-habitable-worlds-observatory-exoplanets-alien-life
https://www.space.com/54-earth-history-composition-and-atmosphere.html
https://www.space.com/22180-neutron-stars.html
https://www.space.com/15680-galaxies.html
https://www.space.com/should-search-for-alien-life-include-looking-for-artificial-intelligence
we know literally nothing about planet formation
they went with the first guess and stuck with that
It's dust that starts spinning in space until it spins so hard it forms a solid mass. idiot
this is what Athietards ACTUALLY believe.
>this is what Athietards ACTUALLY believe.
this is what 12 year-olds ACTUALLY post
If you believe that the Universe is 13 billion years old, and you also believe that the universe will last for Trillions of years, then relatively speaking we're right at the start of it.
The arrogance of claiming to know something like this is astounding. I never understood why they insist they can see all there is to see and have determined the age of everything, and CONVENIENTLY, we're close to the start of it all. Oh, what a neat story.
> Jupiter
Depending on its makeup, probably gas from another star that explode like most elements and drifted to the sun
Nah earth is flat, I am really smart, not you.
/misc/ schizos should stop talking about space. It's embarrassing.
Space is fake, the sun is not a ball of gas
This is where I separate from the wackos. Flat earth is retarded. Everything primitive man has observed since they began recording it says we're a spinning ball circling a star with a bunch of other planets. Flat earth makes zero sense and requires religion-level arguments just to get close to suspension of disbelief, but never reaches it.
Shut up you're wrong you have no proof! Earth is flat you can see it yourself. Real Science proves it's flat!
>Real Science proves it's flat!
This has never been the case. You fall for parlor tricks. Seeing six miles from the top of a mountain doesn't disprove curvature.
There is no curvature, you're falling for NASA lies! How stupid can you be?
Let me ask you something, anon; how do they know?
There's no timeline in space. If the rocks that make up our planet are constantly being recycled through plate tectonics and volcanology, how do we know our "oldest" rocks aren't merely the last ones not yet recycled? How do we know the entire planet wasn't destroyed and re-cooled again? If the magma is close enough to the surface to spill out on a regular basis, is the surface really old, or is it just old this cycle?
>how do we know our "oldest" rocks aren't merely the last ones not yet recycled?
Scandinavian rocks have been unchanged for 2.5 billion years (doesnt count Iceland)
>Scandinavian rocks have been unchanged for 2.5 billion years (doesnt count Iceland)
And before that?
Here's a conundrum - if the earth had formed once already, and then the moon "formed" from that planet collision theory, then everything on earth was molten at that point, no?
Why can there have been nothing before that?
The carbon is still the same carbon, it didn't get atomically obliterated and reformed in a nuclear reaction, schizo.
Yeah, keep believing that. When did the carbon form and begin decaying, schizo?
Jupiter is a star that has not yet been born.
Jupiter isn't real
You know Jupiter is miniature compared to the sun? It can't be started. It doesn't have the mass to provide the uniform pressure to initiate fusion.
The sun is not a ball of gas and Jupiter isn't real idiot, you're so fucking stupid
Jupiter is probably having 90% of the mass needed to become a star so it wasnt very far from becoming one
if Jupiter and Saturn would have been combined into one, that would have been a small star for sure
WRONG
DUMB
>that would have been a small star for sure
This speculation defies many "found" planets that they call hot gas giants, but still not stars, way more massive than Jupiter.
Prove Jupiter is real, you can't!
Prove it isn't. You can't.
The universe itself is very young
13 billion years isn't all that long, even on a human timescale
Space is fake, the earth is 6000 years old, read the bible
They doubled it recently 26 billion or some shit
The earth is 6000 years old read the Bible israelite!
They don't know. They never knew. They'll never know. It can't be known. There's no way to track it.
Science claims shit like this and treats it like fact to compete with religion because people need religious like conclusions to be drawn for them or science isn't that interesting in that regard. They simply can't know half of what they claim.
whos that qt
Ignoring the reddit spacing, why did you title this thread as a journalist? "Earth is actually young? (relatively) instead of "Earth is actually relatively young?".