Scientists find rare double-star system where one star orbited inside the other
Astronomers may have discovered a rare type of binary star system, where one star used to orbit inside its partner.
The most powerful explosions in the universe could reveal where gold comes from
Extraordinarily powerful light from gamma-ray bursts might help produce heavy elements from the outer shells of dying stars.
Bullet-fast moon rocks carved 2 lunar gorges deeper than the Grand Canyon
The lunar canyons Vallis Schrödinger and Vallis Planck are extraordinarily deep, and scientists now know the valleys were carved by bullet-fast moon rocks.
The moon may be 100 million years older than we thought
The moon may have received a volcanic facelift, making it more than 100 million years older than rocks collected from its surface might suggest, a new study finds.