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Edge of Space Found | LiveScience

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Saved by 1 people (0 private), first by anonymouse user on 2009-04-10


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boundary between Earth's atmosphere and outer space

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instrument developed by scientists at the University of Calgary

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73 miles (118 kilometers) above Earth's surface

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astronauts can say they've been to space after only passing the 50-mile (80-kilometer) mark

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space industry is also a somewhat arbitrary 62 miles (100 kilometers)

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United States, however, has never officially adopted a set boundary standard

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overflight rights of satellites and other orbiting bodies

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NASA's mission control uses 76 miles (122 kilometers) as their re-entry altitude

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shuttle switches from steering with thrusters to maneuvering with air surfaces

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13 million miles (21 million kilometers)

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the boundary where Earth's gravity is no longer dominant

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Supra-Thermal Ion Imager

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tracking the relatively gentle winds of Earth's atmosphere and the more violent flows of charged particles in space

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difficult to make measurements in this region, which is too high for balloons and too low for satellites

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second time that direct measurements of charged particle flows have been made in this region

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first time all the ingredients – such as the upper atmospheric winds – have been included

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David Knudsen of the University of Calgary

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carried by the JOULE-II rocket on Jan. 19, 2007

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an altitude of about 124 miles (200 kilometers) above sea level and collected data for the five minutes it was moving through the "edge of space."

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Journal of Geophysical Research on April 7

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space weather and its impacts on Earth

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calculate energy flows into the Earth's atmosphere that ultimately may be able to help us understand the interaction between space and our environment

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link between sunspots and the warming and cooling of the Earth's climate

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how space weather impacts satellites, communications, navigation, and power systems

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