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Satellites are used for a large number of purposes. Common types include military (spy) and civilian Earth observation satellites, communication satellites, navigation satellites, weather satellites, and research satellites.

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NASA Probe Sees Solar Wind Decline

The 33-year odyssey of NASA's Voyager 1 spacecraft has reached a distant point at the edge of our solar system where there is no outward motion of solar wind. Now hurtling toward interstellar space some 17.4 billion...

Super-Earth Atmosphere

A team of astronomers, including two NASA Sagan Fellows, has made the first characterizations of a super-Earth's atmosphere, by using a ground-based telescope...

Kepler Discovers

NASA's Kepler spacecraft has discovered the first confirmed planetary system with more than one planet crossing in front of, or transiting, the same star...

Pulverized Planet

Tight double-star systems might not be the best places for life to spring up, according to a new study using data from NASA's Spitzer Space Telescope....

Dark Asteroids

NASA is set to launch a sensitive new infrared telescope to seek out sneaky things in the night sky -- among them, dark asteroids that could pose a threat to Earth....

On March 31, the P-3 departed Thule, Greenland. IceBridge teams flew a science transit flight to Kangerlussaq, Greenland, where missions will be based for the next several weeks before returning to Thule. Along the route, instruments surveyed several targets of opportunity including two ground tracks of the Ice, Cloud and land Elevation Satellite (ICESat) and several glaciers, turning up great data and spectacular views.

March 29 was another perfect day for a land ice flight. The P-3 flew between deep canyons and over glaciers along the northwest coast of Greenland.

But before the start of land ice flights, IceBridge reached a key milestone over sea ice. On March 28, IceBridge flew its eighth sea ice flight marking the completion of all high- and medium-priority sea ice missions planned from Thule. Among the sea ice missions was a science transit back from Fairbanks to Thule on March 25, during which the P-3 surveyed in complete darkness. Researchers watched the scanning pattern of the green lasers on the sea ice below and the beautiful Aurora Borealis above.

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