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The Stability of the Solar Wind

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NASA's Wind spacecraft observes the solar wind before it impacts the magnetosphere of Earth. Launched in 1994 into an orbit more than two hundred Earth-radii away, one of Wind's prime obj...

T-Tauri Stars

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A newborn star typically goes through four stages of adolescence. It begins life as a protostar still enshrouded in its natal molecular cloud, accreting new material and developing a prot...

A Blazing Gamma-Ray Source

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Blazars are galaxies whose central, supermassive black holes are accreting material from surrounding regions. Although black hole accretion happens in many galaxies and situations, in the...

SAO Discussing Telescope Partnership with UNAM

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The Smithsonian Astrophysical Observatory (SAO) is holding discussions with the Universidad Nacional Autonoma de Mexico (UNAM) on a new 6.5-meter optical/near-infrared telescope to be bui...

Water on the Moon?

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Prior to the Apollo missions to the Moon, scientists speculated that volatiles - including water - may have accumulated in permanently shaded regions at the poles. Then the Apollo era bro...

Mysterious Happenings Around the Star KIC 846852

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The Kepler satellite was designed to search for Earth-sized planets in the habitable zone of stars by measuring dips in a star's brightness as orbiting planets move across the stellar di...

Guardians of the Sky

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It was 16 degrees on a January night, the cold made worse by the fatigue of working so many hours. Box after box, heavy with glass, had to pass through the basement window, into the snow-...
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