NASA has discovered strong evidence for ancient life on Mars, a potentially groundbreaking finding for humanity. In this ...

From mudstones on Mars to strange gases in exoplanet atmospheres, tentative evidence for extraterrestrial life is starting to ...

Electrons released when cosmic rays strike water-ice can provide energy for microbes and facilitate the formation of complex ...

The best reason to send humans to Mars isn’t for guts or glory—or the construction of colonies to safeguard against existential Earth-bound risks. Instead it’s to answer a single, simple question: Is ...

Scientists will gather today to debate where NASA should next land on Mars, as the American space agency prepares a new mission in its search for life on the Red Planet. The debate comes as NASA is ...

One researcher hypothesizes that experiments carried out by NASA's Viking landers in 1976 could have inadvertently killed microbes living in Martian rocks. Other experts are skeptical. When you ...