Two Russians, one American blast off to ISS

Two Russian cosmonauts and a NASA astronaut soared into orbit in a Soyuz spacecraft Wednesday at the start of a two-day journey to the International Space Station.

Opportunity rover to explore Mars gully

NASA's Opportunity Mars rover will drive down a gully carved long ago by a fluid that might have been water, according to the latest plans for the 12-year-old mission. No Mars rover has done that before.

Rover Opportunity wrapping up study of Martian valley

"Marathon Valley," slicing through a large crater's rim on Mars, has provided fruitful research targets for NASA's Opportunity rover since July 2015, but the rover may soon move on.

Image: Astronaut Mae Jemison suits up for launch, 1992

On Sept. 12, 1992, launch day of the STS-47 Spacelab-J mission on space shuttle Endeavour, NASA astronaut Mae Jemison waits as her suit technician, Sharon McDougle, performs a unpressurized and pressurized leak check on her ...

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