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A rock analyzed by NASA's Mars rover Curiosity has a surprising and more varied composition that resembles rare rocks from the bowels of our planet.

US firm SpaceX aims for its next big launch into orbit Sunday -- the first of 12 flights in its $1.6 billion contract with NASA to bring supplies to and from the international space station.

NASA's Mars rover has discovered gravel once carried by the waters of an ancient stream that "ran vigorously" through the area.

A woman took command of the International Space Station for only the second time Monday as three US and Russian colleagues made a safe return from the orbiting space lab to the Kazakh steppe.

NASA's Opportunity rover, older brother to the Curiosity rover that landed on Mars last month, has made a new discovery that geologists find both puzzling and exciting.

US scientists have for the first time found proof that planets can form and survive around sun-like stars within dense star clusters, NASA said Friday.

NASA's Curiosity rover has temporarily halted its journey across the surface of Mars as it tests the tools on its robotic arm.

Pavlodar genius schoolgirl-inventor Nazifa Baktybayeva opted for Kazakh-Turkish University of Suleyman Demirel instead of the University of Texas.

Two International Space Station crew members on Wednesday successfully completed a spacewalk to install a new power switching unit.

NASA's Voyager 1, launched in 1977, is nearing the edge of the solar system and may already be "dancing on the edge" of outer space, the scientists behind the project said Tuesday.

NASA transmitted the first song to be broadcast from Mars on Tuesday, by Grammy-winning US musician will.i.am, as part of efforts to inspire young people to get interested in science.

More than 40 years after Neil Armstrong landed on the moon, humans continue to push the frontiers of space exploration but missions are being tempered by costs, a trend that concerned the astronaut.

NASA's Mars rover Curiosity made its first test drive, leaving wheel tracks near its landing spot.

The US space agency NASA's Mars rover Curiosity will make a wide detour to explore a geographical hot spot on Mars because "it looks cool".

US President Barack Obama on Monday ribbed scientists behind NASA's roving robot Curiosity, instructing them to let him know right away if they found life on Mars.

NASA said Friday that a mysterious spot shown on a photograph sent back to Earth by the Mars rover Curiosity was the crash landing of its rocket stage.

NASA's experimental moon lander crashed and burst into flames seconds after takeoff Thursday due to a hardware fault, the US space agency said, prompting an investigation but no casualties.

NASA rover Curiosity's second day on Mars went "flawlessly," NASA said Wednesday, confirming the antennas, communication links and generator on the $2.5 billion robot are all working well.

After its first day on Mars, NASA's rover Monday sent back to Earth stunning images of its crater landing site and the mountain it aims to climb in the hunt for signs of life.

With a mixture of tense nerves and confidence, NASA counted down Sunday to the landing of its largest ever robotic rover on Mars, where it will search for signs that life may once have existed.