How big would a telescope need to be to see Earth’s dinosaurs from 66 million light-years away? Think big—and then think ...

But the real truth is that alien life on other planets could be even stranger than floating balloons or amorphous organisms ...

It's the oldest question on Earth. Where did we come from? Some people may thank a creator from above, but what if the hand ...

While idea may violate Occam’s razor, “it remains a speculative but logically open alternative,” says biologist Robert Endres.

Add Yahoo as a preferred source to see more of our stories on Google. A composite view of Mars taken by the Viking I and II probes. NASA/USGS In September, NASA announced the discovery of a possible ...

Planet K2-18b, an apparent water world 124 light years away, has been seen as a promising location in the search for aliens, ...

Astrobiologists propose that alien civilizations need accessible coal deposits to industrialize exoplanets and become detectable from Earth.

In September, NASA announced the discovery of a possible sign of life, known as a potential biosignature, on Mars. The Perseverance rover, which has been exploring a dried-up lakebed for years, found ...