Precisely measuring velocity of supernova shockwave

[unable to retrieve full-text content]Astronomers have precisely measured the expansion velocity of a shockwave of the supernova remnant W44. The remnant is located in the constellation of Aquila, approximately 10,000 light-years away from our solar system. The team observed the high-temperature and high-density molecular gas in the millimeter/submillimeter wave ranges.

Source: http://feeds.sciencedaily.com/~r/sciencedaily/space_time/astronomy/~3/0aN4PRDuRQE/130813101012.htm

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