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

learn more… | top users | synonyms

1
vote
1answer
57 views

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, ...
1
vote
0answers
60 views

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 ...
-2
votes
0answers
43 views

If life is adaptive as we believe, why isn't there gaseous dwelling life on Jupiter?

When considering the theory of evolution, if life can evolve from water dwelling creatures to land dwelling, why (theoretically) is there not life on every planet in our solar system?