Astronomers may have discovered a rare type of binary star system, where one star used to orbit inside its partner.

The European Space Agency’s ACES mission could ultimately pave the way for a global network of atomic clocks that make these ...

NASA's Perseverance rover is exploring a new Mars region called Krokodillen, which is thought to harbor some of the oldest and most intriguing rocks on the Red Planet. Seattle startup Interlune's ...