National Aeronautics and Space Administration

A mountain on Mars may have built up over time from lake sediments, according to NASA scientists who have been studying observations from the Curiosity rover scouring the Red Planet.
      
The latest analysis is based on rocks discovered at the lower edges of Mount Sharp, which is located, rather oddly, in the midst of a crater on Earth's neighboring planet.        

The U.S. space agency's Orion capsule blasted off Dec. 5 on its first journey into orbit, in a key test flight before carrying people to deep space destinations like Mars in the coming years.

The unmanned spacecraft soared to space at 7:05 a.m. (1205 GMT) atop a United Launch Alliance Delta IV Heavy rocket that rumbled and roared as it climbed above the Florida coast at sunrise.

A Russian Soyuz spacecraft carrying Italy's first female astronaut has safely docked with the International Space Station, NASA said.
      
Samantha Cristoforetti, along with Russian cosmonaut Anton Shkaplerov and American astronaut Terry Virts, arrived at the orbiting space lab on the Soyuz TMA-15M spacecraft at 0249 GMT Monday, NASA said.
      

A three-man multinational crew of astronauts returned to Earth Monday aboard a Russian Soyuz spacecraft, after spending 165 days working together at the International Space Station, NASA said.
     

An unmanned U.S. supply rocket exploded shortly after lifting off from a commercial launch pad in Virginia, the first disaster since NASA turned to private operators to run cargo to the International Space Station.
   

An unmanned Antares rocket exploded seconds after liftoff from a commercial launch pad on Virginia's eastern seaboard on Oct. 28, marking the first accident since NASA turned to private operators to deliver cargo to the International Space Station.

Six people have sealed themselves inside a white vinyl dome in Hawaii to embark on an eight-month test of how their mental health might fare during a mission to Mars.
      

NASA's MAVEN spacecraft began orbiting Mars on Sunday, on a mission to study how the Red Planet's climate changed over time from warm and wet to cold and dry.

A NASA spacecraft that aims to study the upper atmosphere of Mars and reveal how its climate changed over time is poised to begin orbiting the Red Planet

NASA will partner with Boeing and SpaceX to build commercially owned and operated "space taxis" to fly astronauts to the International Space Station, ending U.S. dependence on Russia for rides, officials said on Tuesday.