Questions regarding life in the universe, especially the possibility of life outside our planet, or the influence of astronomical forces on life on Earth.

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Would dark energy save the earth for a while as the sun heats up?

Would the expansion of space (e.g. dark energy) move the earth further away from the sun over time, possibly saving us for perhaps a few billion years as the sun heats up? Scientists now tend to ...
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Method to determine the amount of reflected starlight necessary for an exoplanet to be visible from a given distance/angle?

What is the method to determine the amount of reflected starlight necessary for an exoplanet to be visible from a given distance/angle? (Not from occlusion but actually visible on its own.) Further, ...
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Available energy for potential life on Titan

There is an interesting discussion about whether there could be life on Saturn's moon Titan. The life could use reaction of hydrogen and acetylene which are being produced by photolysis in Titan's ...
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Landing on an “earth-like” planet (practical application)

This may not belong here in astronomy and my apologies if that's the case. The hypothetical: We find, and are able to travel to (in a reasonably short amount of time), a planet that is for all intents ...