There are no confirmed exomoons, moons orbiting distant exoplanets in other solar systems. There are a few candidates, but none have passed the threshold and been accepted as confirmed. But they must ...

When we think of exoplanets that may be able to support life, we home in on the habitable zone. A habitable zone is a region around a star where planets receive enough stellar energy to have liquid ...

Water is the essence of life. When scientists discovered permafrost ice caps on Mars’ north pole in 1976, the news immediately sparked speculation about potential life on the red planet. The later ...