Barnard’s Star hosts four hostile small planets whose unusual chemistry and orbital rhythm reveal how compact planetary systems can form and survive.

Some of the most common planets in our galaxy may be hiding far more water than scientists can currently detect—even with the ...

For a world to maintain an atmosphere long enough for life to gain a foothold, it seems it needs to be at least as big as ...

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 ...

For generations, artists and science-fiction writers have imagined alien landscapes beneath twin sunsets. The image became iconic in popular culture long before astronomers confirmed that planets ...

Astronomers have revised the mass of nearby exoplanet GJ 3378 b, recasting it as a rocky super‑Earth in the habitable zone and renewing interest in its potential to host alien life.

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 ...

There are few ideas in science that capture the imagination quite like the search for extraterrestrial life. From Mars missions and exoplanet surveys to SETI's decades-long hunt for signals, ...