Mystery "graffiti" on Saturn moon has experts stumped
A new image of the moon Tethys shows odd red lines across its surface, but no one seems to know what caused them
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A new image of the moon Tethys shows odd red lines across its surface, but no one seems to know what caused them
Space agency hopes series of dramatic tests in Virginia will improve on-board locator beacons so when the worst happens, help arrives fast
"If we were there, we'd get stronger; it would be like a workout every day," one NASA official says about life on Kepler-452b
Latest pictures from the New Horizons probe reveal glacier-like nitrogen ice flows and something that "stunned" investigators
If you took a spaceship to Pluto and looked out the window, this is what you'd see
NASA's Kepler space telescope has spotted a potentially habitable "older, bigger cousin to Earth" orbiting a sun-like star
A Russian Soyuz rocket shot into space Wednesday, carrying an international three-man crew to the space station
The icy peaks stand as tall as the Appalachian Mountains
The New Horizons probe has taken some of the best images yet of Nix and Hydra, two of Pluto's moons
A Russian Soyuz spacecraft prepares to take three fresh crew members to the space station after a series of failures
The image from a new satellite has even the president tweeting with excitement; NASA says there's more where that came from
Rings of X-ray light flare and fade around an active black hole in stunning new observations by NASA's Swift space telescope
President John F. Kennedy ignited the "space race" with the Soviet Union on May 25, 1961 with his goal of putting an American on the moon; The Apollo 11 mission captured the imagination of a generation when astronaut Neil Armstrong became the first person to step foot on the moon July 20, 1969
The Smithsonian Institution's scramble for preservation comes on the anniversary of Apollo 11's historic moon landing
"Just astoundingly amazing" pictures from New Horizon probe reveal what's going on in region shaped like a heart
The presidential candidate recalled that NASA told her they weren't hiring women
Sixty feet down in the Atlantic Ocean, they'll experience conditions that mimic life on the red planet
A zoomed-in image of the moon's surface reveals surprising and intriguing features
Scientists delighted by views of "baffling" terrain on Pluto, including towering ice mountains
In 1930, we first spotted Pluto as a dot in the distance; 85 years and 3 billion miles later, the dwarf planet comes into focus
Famous fans of Pluto tweet for the distant dwarf's re-promotion to planethood
NASA scientist Dr. Jim Green answers your questions about Pluto
Once-in-a-lifetime close encounter was more than nine years and three billion miles in the making for NASA and its New Horizons probe
Scientists say initial pictures of Pluto taken by the New Horizons probe reveal a surprisingly diverse world
Over nine years and 3 billion miles, as NASA's New Horizons spacecraft approached the distant dwarf planet, our vision of Pluto came into focus with the release Dec. 5, 2015 of the sharpest photos ever