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
Historic telescopes through the ages, from Galileo to the 21st century
For more than 40 years, missions throughout the solar system have sent back stunning images of our home planet
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
GeoEye 1 puts an historic event in perspective
After a do-or-die engine burn the second spacecraft ever to orbit Jupiter is preparing to revolutionize our view of the giant planet
A new film presents an innovative plan to image potentially habitable planets around our sun's closest stellar neighbor—Alpha Centauri
Astronomers are racing to get the first historic image of another possibly Earth-like planet. Here’s how they’ll do it
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Twenty-six nongovernment teams are competing to get a rover on the moon by 2015. Here is a look at one of the best
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
After more than 20 years the giant mirror of the James Webb Space Telescope is finally complete
Saturn's icy moon Enceladus has a surprisingly warm inner world
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...
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
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
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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
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