Exoplanets like Earth have been discovered but not all Earth-like planets are equal when it comes to alien life.

A rare triple conjunction of Venus, Mars and Mercury is happening on the opposite side of the solar system to where Earth is, ...

More than ever before, space stock Planet Labs is a defense contractor now. Planet Labs ( PL +7.27%) stock announced this ...

The upcoming year will offer a blood-red moon, spectacular meteor showers and the first glimpse of the sun’s corona since ...

Planet Labs sees strong defense and intelligence demand as backlog hits $734 million. Click to learn more about PL's ...

In a blow to anyone dreaming that complex life may exist elsewhere in the universe, a new study suggests we're unlikely to ...

Shining in the constellation Gemini near the bright stars Pollux and Castor, Jupiter's opposition is the best time to see the ...

Choose your fighter for the origin of water on Earth! Was it always here or did it come to this planet from somewhere else in ...