It's dark and surprisingly warm in a cave in western Spain that hides our most intimate connection to the prehistoric past -- hand silhouettes painted tens of thousands of years ago.

SpaceX has launched a top-secret spy satellite for the U.S. government.

The unmanned Falcon 9 rocket lifted off Monday morning from its NASA-leased pad at Kennedy Space Center in Florida. It hoisted a classified satellite for the National Reconnaissance Office.

Thousands of people joined a global March for Science on Saturday with Washington the epicenter of a movement to fight against what many see as an "assault on facts" by populist politicians. 

U.S. President Donald Trump himself passed dozens of protesters on his way to visit wounded soldiers at a military hospital.

Budget cuts and political assaults on science are expected to draw thousands of demonstrators to the streets in more than 500 cities worldwide Saturday for the first March for Science.

A Chinese rocket successfully sent the country's first cargo spacecraft, Tianzhou-1, into space from the southern island province of Hainan Thursday. 

A Russian and an American blasted off from the Baikonur cosmodrome in Kazakhstan on Thursday, the first two-person launch to the International Space Station in over a decade. 

The Soyuz MS-04 spacecraft carrying veteran Russian cosmonaut Fyodor Yurchikhin and NASA rookie Jack Fischer shot into the sky in bright conditions at 0713 GMT.

A peanut-shaped asteroid 1.3 kilometers (3,280 feet) across streaked past Earth on Wednesday, giving astronomers a rare chance to check out a big space rock up close.

A rocket packed with food and supplies for the astronauts living at the International Space Station is scheduled to blast off Tuesday from a NASA launch pad.

NASA will probably delay the first two missions of its Orion deep-space capsule, being developed to send astronauts beyond earth's orbit and eventually to Mars, the US space agency said on Thursday.

France and Japan want to recover pieces of a Martian Moon and bring them back to Earth, the head of France's National Center for Space Studies (CNES) said Thursday.