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NASA Events:

NASA Honors U.S. Veterans

Space Station Commander Doug Wheelock (Col., U.S. Army) and Flight Engineer Scott Kelly (Capt., U.S. Navy) thanked veterans and their families for their heroic deeds and dedication to serve the country.

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AJ26 engine test at NASA's Stennis Space Center in Mississippi

NASA Test Fires New Rocket Engine for Commercial Space Vehicle

NASA's John C. Stennis Space Center in Mississippi conducted a successful test firing Wednesday of the liquid-fuel AJ26 engine that will power the first stage of Orbital Sciences Corp.'s Taurus II space launch vehicle.

› Learn More | › Watch Test Video

Fermi Telescope Finds Giant Structure in Our Galaxy

NASA's Fermi Gamma-ray Space Telescope has unveiled a previously unseen structure centered in the Milky Way. The feature spans 50,000 light-years and may be the remnant of an eruption from a supersized black hole.

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EPOXI Flyby Reveals New Insights Into Comet Features

NASA's EPOXI mission spacecraft successfully flew past comet Hartley 2 at 10 a.m. EDT Thursday. Scientists say initial images from the flyby provide new information about the comet's volume and material spewing from its surface.

› Learn More | › Image Gallery | › Video: Flight of the Comet | › Man Behind the Comet

NASA's Cassini Reveals Saturn Is on a Cosmic Dimmer Switch

Like a cosmic light bulb on a dimmer switch, Saturn emitted gradually less energy each year from 2005 to 2009. Unlike an ordinary bulb, Saturn's southern hemisphere consistently emitted more energy than its northern one.

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Sensor on Mars Rover to Measure Radiation Environment

About eight months before the NASA rover Curiosity touches down on Mars in August 2012, the mission's science measurements will begin much closer to Earth.

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Oh Snap, NASA and LEGO Join Forces

LEGO bricks aren't just for kids, and they aren't just for Earth, either. Astronauts on board the space station will build small model spacecraft and working objects in orbit and share the experience with schoolchildren watching on Earth.

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Live 'Curiosity Cam': Watch NASA's Next Mars Rover Being Built

Curiosity Cam takes you inside the clean room at NASA's Jet Propulsion Laboratory in Pasadena, Calif., so you can watch the next Mars rover being built. Launch is scheduled for late 2011, with landing in August 2012.

› Watch Live Now | › Learn More

NASA Images

Tattooed Mars

Originally released Aug. 1, 2007, this image is of Mars' Russell Crater dune field, which is covered seasonally by carbon dioxide frost. This image shows...