In 1572, the Danish astronomer Tycho Brahe observed and studied the explosion of a star that became known as Tycho's supernova. More than four centuries later, Chandra's image of the supernova remnant shows an expanding bubble of multimillion degree debris (green and red) inside a more rapidly moving shell of extremely high energy electrons (filamentary blue).
Credit: NASA/CXC/Rutgers/J.Warren & J.Hughes et al.
Astronomers have found compelling evidence that a supernova shock wave has produced a large amount of cosmic rays, particles of mysterious origin that constantly bombard the Earth. This discovery, made with NASA's Chandra X-ray Observatory, supports theoretical arguments that shock waves from stellar explosions may be a primary source of cosmic rays.
The above story is based on materials provided by Chandra X-ray Center. Note: Materials may be edited for content and length.
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Chandra X-ray Center. "Tycho's Remnant Provides Shocking Evidence For Cosmic Rays." ScienceDaily. ScienceDaily, 23 September 2005. <www.sciencedaily.com/releases/2005/09/050923075505.htm>.
Chandra X-ray Center. (2005, September 23). Tycho's Remnant Provides Shocking Evidence For Cosmic Rays. ScienceDaily. Retrieved April 18, 2014 from www.sciencedaily.com/releases/2005/09/050923075505.htm
Chandra X-ray Center. "Tycho's Remnant Provides Shocking Evidence For Cosmic Rays." ScienceDaily. www.sciencedaily.com/releases/2005/09/050923075505.htm (accessed April 18, 2014).