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If there was an alien civilization equally advanced as us outside of the Solar System or our galaxy, how difficult would it be for them to realize our planet holds life? I mean, i imagine Earth is pretty special and must pique interest of intelligent aliens. And i know that because of the distance it's not possible to see objects far away in their current state but how it looked like in the far past, but still, our planet was teeming with life from pretty early on in it's existance.
Showing all 8 replies.
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>>16991976
I don't know why you frame the question like that, civilization of our level (that being us) can't detect reliable life signs anywhere beyond out own solar system because they either don't exists or we can't detect them yet.
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>>16991976
>is pretty special
My thoughts are that we aren't special at all, there are plenty of planets in the universe just like ours that support life. So aliens have no reason to visit us because there is life closer to them
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>>16991976
any civilization that achieves technological advances inevitably dedicates massive resources to star mapping. as its AI continually scans for planets and bodies, it eventually notices that our solar system has a planet where its moon has an almost apparent perfectly congruent solar eclipse.
the AI flags this to the other civilization as an unusal coincidence, and they eventually notice that we have life.
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>>16991976
We can, right now, create a gravity telescope by using the natural curve of light around the sun, effectively making the sun into a telescope. We would need to place the viewing point somewhere about 15x further than the distance past Pluto but a solar sail could get there is 30 years. The resolution would be crazy. We would have 2 km pixel resolution. We would be able to map continents and watch seasons change on exoplanets. All with technology we possess now.
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>>16993452
Agrees with trepidation. We have already mapped some 15,000 solar systems and how many are like ours. 1, ours. This strange clockwork precision of a stable solar system seems to be insanely impossible. Solar systems are chaotic, full of large gas giants or none at all. A solar system seems incapable of possessing both gas giants and rocky planets at once because the gas giants toss the smaller planets out. Our gas giants saved us from annihilation by comets and meteors. If life like ours exists it must be under tremendously different circumstances.