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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....

Twice a year, Solar Week provides a weeklong series of web-based educational activities for classrooms about our magnetic variable star, the sun, and its interactions with Earth and the solar system.

Each day of Solar Week offers a different set of lessons and games for students ranging from the upper elementary to high school level. The site covers everything from solar radiation to pursuing careers in science. For example, on Monday, after learning details about how the sun is a star just like the other ones in the sky, students can play a game to determine just where the sun lies in the Milky Way. Or on Thursday, they measure how fast a coronal mass ejection races from the sun.

Helping to answer the student’s questions on an online bulletin board will be three scientists from NASA’s Goddard Space Flight Center in Greenbelt, Md. who have been involved almost since the project began in 2000. Throughout the week, Heliophysics researchers Terry Kucera, Dawn Myers, and Holly Gilbert will be among some twenty scientists who will share their excitement about the dynamic star at the center of our solar system.

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