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
Atmospheric physicist Nick Gorkavyi missed witnessing an event of the century last winter when a meteor exploded over his hometown of Chelyabinsk, Russia.
NASA's Mars rover Opportunity is studying the area of contact between a rock layer formed in acidic wet conditions long ago and an even older one
This graphic shows the orbits of all the known Potentially Hazardous Asteroids (PHAs), numbering over 1,400 as of early 2013.
NASA's new short film "Water Falls" invites the public along for the ride as scientists follow water around the globe — on a globe.
NASA's Juno spacecraft is halfway to Jupiter.
On Aug.11 and 12, 2013, the annual Perseid meteor shower will peak
Don’t be fooled by the title; the mysterious, almost mystical bright light emerging from these thick, ominous clouds is actually a telltale sign of star formation.
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.
The house-sized rock that exploded in the skies near Chelyabinsk, Russia, in February may have been a member of a gang of asteroids that poses a threat to Earth
What if we got to land on Europa's surface and conduct something along the lines of a more in-depth interview?
Something big is about to happen on the sun.
Using infrared data from the Subaru Telescope in Hawaii, an international team of astronomers has imaged a giant planet around the bright star GJ 504.
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