Kepler's Supernova: Huge 17th-Century Star Explosion Comes i

Kepler's Supernova: Huge 17th-Century Star Explosion Comes into Focus
SPACE.com
This is the remnant of Kepler's supernova, the famous explosion that was discovered by Johannes Kepler in 1604. The red, green and blue colors show low, intermediate and high energy X-rays observed with NASA's Chandra X-ray Observatory, and the
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