Recent observations suggest that scientists have identified potential microbial fingerprints in the atmospheres of other planets, raising intriguing questions about the possibility of alien life ...

Learn about the theories behind the unusual dimming of Tabby's Star, from alien megastructures to an orbiting companion ...

These noctilucent clouds, reflecting light from the sun after sunset, have been visible in Martian skies for the past four fall seasons. Credit: NASA / JPL-Caltech / MSSS A rover got a new view of ...

A spectacular photograph of a saucer-shaped cloud over Canmore, Alberta, has sparked a wild online debate, with one ...

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