A rocky planet orbiting in the habitable zone of a sun-like star may look like a perfect place for life to thrive — but not if it's too small to hold onto its atmosphere. So, we may wonder: How much ...

Add Yahoo as a preferred source to see more of our stories on Google. Humans have always wondered about life beyond the stars. The curiosity doesn't only stem from popular culture and the advent of ...

Can desert planets with alien life, like the one in the movie *Dune*, exist? Scientists’ answer leans toward “no.” A study suggests that planets with almost no water are highly unlikely to sustain ...

Add Yahoo as a preferred source to see more of our stories on Google. Scientists say tiny exoplanets smaller than Mars simply can't hold an atmosphere long enough for alien life to survive. ©Image ...

Add Yahoo as a preferred source to see more of our stories on Google. An illustration of a watery exoplanet with a red dwarf sun overhead. A new study suggests that the exoplanet GJ 3378b, which ...

Astronomers have identified a clue hidden in the light of certain stars that's already led them to discover seven new alien planets, with more expected to come. To be clear, these alien planets likely ...

IS IT possible to tell whether a planet hosts life just from its glow? A new analysis of Earthshine, sunlight reflected off Earth then bounced back by the moon, suggests this is a viable way to seek ...

Given the size and age of the universe, it should be full of species with technology far more advanced than our own. But so far there is no trace ...

The green colour of Earth's forests is not accidental. Plants contain chlorophyll, a pigment that absorbs red and blue wavelengths of sunlight while reflecting green light. This process allows plants ...