Nickname picked for next target of NASA spacecraft that explored Pluto: Ultima Thule...

The head of the Vatican's astronomical observatory has hailed Stephen Hawking as a scientist who gave a "human face" to astronomy...

Stephen Hawking, the theoretical physicist whose brilliant mind ranged across time and space though his body was paralyzed by disease, has died at 76...

Word by painstaking word, Stephen Hawking produced a masterwork of popular science that outlined his vision of time, the universe and humanity's place within it...

Stephen Hawking, the theoretical physicist whose brilliant mind ranged across time and space though his body was paralyzed by disease, has died at 76....

Jupiter's poles are blanketed by geometric clusters of cyclones and its atmosphere is deeper than suspected...

China plans to begin recruiting civilian astronauts for its military-backed space program and increase the number of crewed missions to around two a year...

NASA has launched another of the world's most advanced weather satellites, this time to watch over the western US...

President Vladimir Putin has unveiled some unequaled strategic nuclear weapons that he says Russia has tested, including a nuclear-powered cruise missile, a nuclear-powered underwater drone and a hype...

A European space probe has swung into position around Mars in preparation to analyze its atmosphere for possible signs of life...