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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....

NASA and the Canadian Space Agency invite journalists and the public on Tuesday, July 14, to observe the international, multidisciplinary Pavilion Lake Research Project team as it studies the origin of rare freshwater carbonate rock structures that thrive in Pavilion Lake, British Columbia, Canada.

Reporters will have an opportunity to interview Pavilion Lake Research Project scientists from 9 a.m. to 5 p.m. PDT on July 14 as they study and explore the unique underwater formations and conduct research about life in extreme environments. Journalists interested in attending must register before July 13 at:

A park permit is required for filming at Pavilion Lake. Reporters should e-mail Rob Enns at to obtain a permit.

Scientists believe the carbonate rock structures, known as microbialites, first were formed by microorganisms more than 2.5 billion years ago. Today, environments rich in microbialites are seen as potential analogs for the biological, geological and chemical processes of early Earth. Similar processes possibly occurred on other planets, such as Mars.

Using a combination of underwater vehicles and scuba divers, the research project blends science and technology to advance knowledge of astrobiology and examine how humans could explore the moon and Mars.

Pavilion Lake Research Project science team members, including a pair of NASA astronauts, will be available for interviews at the event.

For more information about NASA's plans lunar surface analogs, visit:

The Pavilion Lake Research Project science team is providing mission updates on Twitter at:

For more information about this year's Pavilion Lake Research Project and a list of participants and partner organizations, visit:

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