What happens when you make a low-level flyby of a cometary nucleus? You get jaw-dropping images. The above 2-shot mosaic of Comet 67P/Churyumov-Gerasimenko was taken by ESA’s Rosetta orbiter at an effective altitude of just 19.9 kilometers...
Humans have been visiting and exploring Mars for more than half a century, and NASA has released a video celebrating the agency's remarkable contributions
A new film presents an innovative plan to image potentially habitable planets around our sun's closest stellar neighbor—Alpha Centauri
The planet, Kepler 452 b, is likely rocky and orbits in its star’s habitable zone where liquid water can exist
High-resolution images of the icy worlds reveal towering mountains, yawning canyons and perhaps hints of a subsurface ocean
Astronomers are racing to get the first historic image of another possibly Earth-like planet. Here’s how they’ll do it
Twenty-six nongovernment teams are competing to get a rover on the moon by 2015. Here is a look at one of the best
A recurrence of the 1859 solar superstorm would be a cosmic Katrina, causing billions of dollars of damage to satellites, power grids and radio communications
Isolated in a giant thermal vacuum chamber, NASA’s $8.6 billion next-generation observatory is riding out the worst of Hurricane Harvey
A boom in nanosatellites could revolutionize space science and industry, but also dramatically increase the hazards of space junk
But now comes the hard part: making phones, PCs and other mobile gadgets that can take advantage of the broadcast spectrum's strong signals
Between 1998 and 2010 the station evolved from a single Russian module to a behemoth orbital outpost the size of a football field
Aerial views of the damage at the Fukushima Daiichi power plant from March 12 to March 17 show signs of the chaotic sequence of events ranging from explosions to fires
Space shuttle Endeavour, the replacement for the doomed Challenger, set off on its final mission May 16
Astronauts are even braver than you think. Here's a list of NASA's closest calls during the history of the agency's shuttle program
For two weeks in April the world was ablaze. NASA satellites documented these infernos, both wild and controlled, as they burned from the U.S. to Australia
After a do-or-die engine burn the second spacecraft ever to orbit Jupiter is preparing to revolutionize our view of the giant planet
Saturn's icy moon Enceladus has a surprisingly warm inner world
After more than 20 years the giant mirror of the James Webb Space Telescope is finally complete
This week’s fiery failure of Orbital Sciences’s Antares rocket has some wondering if the company has the right stuff to support NASA’s goal to outsource orbital flights...
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