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Express_Helicopter93 t1_j69v7b1 wrote

Reply to comment by pinkunicorn555 in What is your favorite exoplanet, and why? by Mister_Moho

No it wouldn’t. An earth-like composition for Kepler 22b was ruled out.

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pinkunicorn555 t1_j69y1n9 wrote

So it's a water world. It is still located in the habitatable zone, unlike Gliese 1214b. If it has an ozone, it would have the same surface temp as Earth, and its orbit around its sun is almost as long as ours. There is no way to tell if there is life in that water, but I would put money on it.

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nuclear_blender t1_j6a4f8f wrote

There's a lot that goes into whether or not a life can harbor life. We don't know much about the composition of the planet, how old the solar system was before the planet developed, we don't know of it core or if it has a magnetic field. Not many people realize that jupiter is a major reason why life is supported on earth. Jupiter is so massive that it "catches" a lot of massive asteroids that could otherwise hit earth and cause a mass extinction event

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Maidwell t1_j6a6eyt wrote

This is the part I think a lot of people miss when they estimate life in the universe.

Our planetary system has been exceptionally stable thanks to a calm main sequence star and a giant planet as protector. Yet even with the ideal scenario, and single celled "life" starting on Earth almost immediately after the late heavy bombardment allowed, it still took nearly 4 BILLION years for multi-celled life to evolve and flourish in the Cambrian explosion 500 million years ago.

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