A pale blue dot may not be the only hint of life beyond the solar system. New research suggests astronomers pay attention to pale orange worlds as well, since they may resemble what Earth looked like earlier in its history.
A series of laboratory tests show that some terrestrial bacteria would adapt well to the salty and sulfate-rich ocean believed to exist beneath the hard icy shell of Europa.
It's a virtual certainty that comets have delivered the building blocks of life to Europa's hidden ocean, according to a new study.
Although scientists have long considered oxygen a sign that life exists on an alien planet, new research suggests the element could be produced without it.
Red dwarf stars may be able to support habitable exoplanets after all -- through complex tidal interactions between star and planet, global magnetic fields could evolve, protecting hypothetical life forms from the red dwarfs' ferocious nature.
Scientists have their first evidence that trickles of liquid water play a role in sculpting mysterious dark streaks that appear during summertime months on Mars.
If you're weary of the rat race, some ideas from Captain Kirk and Captain Picard could help you get out of it earlier.
Europa is an ice-covered moon orbiting Jupiter that likely an ocean underneath. Perhaps that ocean contains life. Perhaps it doesn't. But we're not going to know for sure until we send a probe there to check things out.
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