A team of astronomers has detected what they call the most promising signs to date of a possible biosignature, or signs of ...

The glowing object was a bolide, fireballs that explode in a bright flash, according to experts. It streaked across Mexico’s predawn skies on Wednesday.

A chemical called dimethyl sulfide popped up in an analysis of exoplanet K2-18b’s atmosphere. On Earth, it’s only made by ...

One such moment was when space craft sent back images of the Earth for the first time. Another is the discovery of life on ...

The Lyrid meteor shower — "considered one of the oldest and most reliable celestial shows of the year" — will overlap the Eta ...

Why does the world store nuclear waste and just not shoot it into the Sun or deep space? – Jason, age 16, Mackay, Queensland.