The larger of the two moons of Mars, Phobos, passes directly in front of the other, Deimos, in a new series of sky-watching images from NASA's Mars rover Curiosity.
Following months of analysis and testing, the Kepler Space Telescope team is ending its attempts to restore the spacecraft to full working order
NASA's Juno spacecraft is halfway to Jupiter.
Over the last hundred years, the human population has exploded from about 1.5 billion to more than seven billion, driving an ever-increasing demand for resources.
Marvel Comic's fictional superhero, Ironman, uses a powered armor suit that allows him superhuman strength.
NASA has completed the first step toward a mission to find and capture a near-Earth asteroid, redirect it to a stable lunar orbit and send humans to study it.
The true identity of centaurs, the small celestial bodies orbiting the sun between Jupiter and Neptune, is one of the enduring mysteries of astrophysics.
NASA's Hubble Space Telescope has discovered a new moon orbiting the distant blue-green planet Neptune, the 14th known to be circling the giant planet.
Astronomers making visible-light observations with NASA's Hubble Space Telescope have deduced the actual color of a planet
Defying 30 mph gusts and temperatures down to minus 22 F, NASA’s new polar rover recently demonstrated in Greenland that it could operate
Data from Voyager 1, now more than 11 billion miles (18 billion kilometers) from the sun... is closer to becoming the first human-made object to reach interstellar space.
Astronomers using NASA's Hubble Space Telescope have found compelling evidence of a planet forming 7.5 billion miles away from its star
NASA's Hubble Space Telescope will have two opportunities in the next few years to hunt for Earth-sized planets
Now a new creature can be added to that list: large, bright pink slugs.
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