Debris From Stellar Explosion Not Slowed After 400 Years: Still Blasting Away at Over 20 Million MPH [Video] – SciTechDaily

Kepler’s Supernova Remnant. Credit: NASA/CXC/Univ of Texas at Arlington/M. Millard et al.
Astronomers have used NASA’s Chandra X-ray Observatory to record material blasting away from the site of an exploded star at speeds faster than 20 million miles per hour. This is about 25,000 times faster than the speed of sound on Earth. The Kepler supernova remnant is debris from a star that blew apart about 20,000 light years from Earth in our Milky Way galaxy.
In 1604, early astronomers, including Joh…

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