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Ervindark t1_ixqz6w5 wrote

It won't be called a "solar" system for starters.


Bigjoemonger t1_ixr1swu wrote

Sun will become a red giant in about 5 billion years, expanding in size to swallow Mercury, Venus and Earth.

As a red giant, Jupiter and Saturn will fall in the habitable zone so several moons could grow new life.

It'll be a red giant for a billion years.

Then the sun's core will collapse into a white dwarf and the outer shells of the sun will be thrown off creating a planetary nebula that will likely destroy most of the planets.


gjennomamogus t1_ixrk6te wrote

is a billion years long enough for complex life to evolve on said moons and leave before the supernova?


Baby_Legs_OHerlahan t1_ixrnill wrote

From my limited understanding, no probably not.

It took billions of years for simple single celled life on earth to take the step to multi-cell (complex) life.

Once life on earth did achieve the multi-cellular stage, evolution took off pretty fast after that.

But if some of the Moons of Saturn and Jupiter do currently harbour uni-cellular life in the oceans under the ice like some believe, in a few billion years who knows what might evolve from that


Bigjoemonger t1_ixrpqkv wrote

Much of the time it took for life to form was because the planet was still forming. It was highly volcanically active and was being constantly bombarded with cosmic debris as it was clearing its orbital path. All of that would be a significant hindrance to complex life evolving. As the planet settled and orbital impacts waned then life evolved.

But consider that the moons of Jupiter and Saturn are already formed and have been for some time, and have already cleared their orbital paths. I would imagine the time to evolve life would be much shorter than it was for us. Especially if the time between now in then is full of us sending probes and robots that are contaminated with earths biological materials. All they need is the right conditions.


Kullenbergus t1_ixqzgwm wrote

The sun will most likley expand to encompas atleast earth and maybe even mars and then it will shrink and explode or shrink and fade away. And that might push jupiter into becomeing a new dwarf sun and rearange the surviving orbital bodies into a new system. But this is a far few years away and humanity will not be around one way or another.


Bensemus t1_ixr4yqo wrote

> it will shrink and explode or shrink and fade

It will turn into a white dwarf. It's not massive enough to explode.


Yeomanroach t1_ixqzj0e wrote

The sun will expand before it dies, absorbing all the rocky planets and maybe even the gas giants. The ice giants will remain in darkness as rogue planets.


Dacu_Dacul t1_ixr5l85 wrote

I don't think humanity will be around for that long...


h2ohow t1_ixr7j5r wrote

Long before then, humans will find new solar systems to inhabit and spread their genes throughout the galaxy.


space-ModTeam t1_ixr7nbj wrote

Hello u/G10V10, your submission "Whats going to happen to our solar system when the sun dies?" has been removed from r/space because:

  • Such questions should be asked in the "All space questions" thread stickied at the top of the sub.

Please read the rules in the sidebar and check r/space for duplicate submissions before posting. If you have any questions about this removal please message the r/space moderators. Thank you.


[deleted] t1_ixqy9td wrote



jol72 t1_ixr4pu1 wrote

The sun isn't going to "poof" out of existence like that.