Spacewalkers continue repair of cosmic ray detector
Astronauts carry out second of four spacewalks to repair the Alpha Magnetic Spectrometer, the costliest science instrument aboard the International Space Station
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Astronauts carry out second of four spacewalks to repair the Alpha Magnetic Spectrometer, the costliest science instrument aboard the International Space Station
Another "unicorn" meteor outburst isn't expected to happen until 2043
A dramatic test mishap damages a SpaceX Starship prototype in Texas
"We are on the cusp of exploring what may be the best place in our solar system to look for life beyond Earth," NASA says of Jupiter's icy moon
Colorful shooting stars will streak across the night sky during one of the most famous annual meteor displays
NASA argues concerns raised in new inspector general's report are "worst-case" and ignore mitigation efforts
Four spacewalks will be needed to repair the $2 billion Alpha Magnetic Spectrometer
Astronomers spotted the star just 29,000 light-years away from Earth — "practically next door by astronomical standards"
The test will help clear the way for an in-flight abort test as early as next month
The solar system's smallest, innermost planet resembled a tiny black dot Monday as it passes directly between Earth and the sun
Initial service is expected to begin next year with global connectivity expected in 2021
Engineers are adding inspections and tests to prevent repeat of parachute deploy problem
The sample had remained sealed since it was collected during the Apollo 17 mission in 1972 — until now
Boeing has plans for a lander to carry astronauts back to the moon as part of NASA's Artemis program
The supply ship brought 8,200 pounds of equipment and supplies to the space station