This image provided by NASA shows the spiral galaxy Messier 101 and is a composite of views from the Spitzer Space Telescope, Hubble Space Telescope, and Chandra X-ray Observatory. The red color shows Spitzer’s view in infrared light. It highlights the heat emitted by dust lanes in the galaxy where stars can form. The yellow color is Hubble’s view in visible light. Most of this light comes from stars, and they trace the same spiral structure as the dust lanes. The blue color shows Chandra’s view in X-ray light. Such composite images allow astronomers to see how features seen in one wavelength match up with those seen in another wavelength.


This image provided by NASA shows an artist concept of an Iridium satellite in earth orbit. Two big communications satellites collided in the first-ever crash of its kind in orbit over Siberia Tuesday Feb. 10, 2009, shooting out a pair of massive debris clouds and posing a slight risk to the international space station. The collision involved an Iridium commercial satellite, which was launched in 1997, and a Russian satellite launched in 1993 and believed to be nonfunctioning.


This photo provided Friday Feb. 13, 2009 by the European Space Agency shows the Ariane-5 rocket, carrying communication satellites, after lift off Thursday Feb. 12 from Kourou, French Guiana. The Ariane-5 rocket shuttled one satellite for Eutelsat Communications, a French operator of satellites, and the other for global operator SES. The mission also launched two micro-satellites for the French government’s arms procurement agency, the DGA.13

The Gravity Probe B, with a telescope and gyroscopes, in an undated handout photo. For 46 years, Francis Everitt, a Stanford University physicist, has promoted the often perilous fortunes of Gravity Probe B, perhaps the most exotic, “Star Trek”-ish experiment ever undertaken in space.


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  1. Maria Says:

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