The Japanese Hayabusa2 spacecraft visited the asteroid Ryugu, which had flowing water for over a billion years. This unexpected discovery, made when the spacecraft collected and returned samples, adds ...

A team of scientists has investigated how Earth’s twin became so inhospitable, and whether the same will happen to our planet ...

This unexpected color raises new questions about the alien chemistry of comets from beyond our solar system. On Sept. 7 2025, the skies darkened as Earth's shadow consumed the moon. Skywatchers in ...

Researchers in Japan have found that the parent asteroid of Ryugu, a near-Earth asteroid, retained water in ice form for ...

Astronomers have uncovered a surprising new structure in our region of the galaxy, an interstellar tunnel that appears to ...