Space Debris in Earth Orbit

Amount of space debris on Earth orbit has reached a critical threshold. According to estimates of specialists National Research Council, which is the executive body of the National Academy of Sciences of the United States, now in near-Earth space there is more than 22 thousand manmade debris, movement of which can be monitored from Earth.

Two NASA Sounding Rockets for Studying the Ionosphere

NASA’s Wallops Flight Facility in Virginia successfully launched two NASA sounding rockets carrying experiments to study the ionosphere on Sunday, July 10, 2011. Rockets are probing mysterious electric currents found in the uppermost reaches of the atmosphere that can disrupt satellite signals.Ionosphere is filled with electrically charged particles such as protons and atomic oxygen created by extreme ultraviolet radiation from the sun reacting with air molecules.

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