A planetary scientist explains new research explaining the differing compositions between space rocks that hit Earth and are brought back.

It’s hard to picture now, but Earth’s deep blue oceans were once green. According to a new study by Japanese researchers, ...

NASA's Perseverance rover finds hundreds of mysterious spheres on Mars, raising exciting questions about the Red Planet's history and possible signs of life.

LOS ANGELES — Wink Martindale, the genial host of such hit game shows as "Gambit" and "Tic-Tac-Dough" who also did one of the ...