The leading explanation for all of these mysteries is known as the giant impact hypothesis. According to this story, when the ...

Scientists discovered that methyl halides, a gas produced by microbes, could be a biosignature for life on distant planets.

A recent paper suggests that if astrobiologists want to make an educated guess about what life on Venus might look like, they ...

Artist's concept of a potentially habitable super-Earth orbiting a star called HD 20794. Illustration credit: Gabriel Pérez ...

Astronomers have detected mysterious X-ray signals coming from a nearby white dwarf star for more than 40 years. We may now ...

These unusual ideas included a deep pit under the planet and a top-secret military base that had ... These trees are dark green, but in such a high concentration, they look much darker from low Earth ...