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This composite image of M101 (aka, the "Pinwheel Galaxy") combines data from four of NASA's space-based telescopes. X-rays from Chandra (purple) reveal the hottest and most energetic areas due to exploded stars, superheated gas, and material falling toward black holes. Infrared data from Spitzer (red) shows dusty lanes in the galaxy where stars are forming, while Hubble data (yellow) traces the light from stars. Ultraviolet emission detected by GALEX (blue) shows emission from young stars.
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Oldest Recorded Supernova RCW 86 is approximately 8,000 light-years away. At about 85 light-years in diameter, it occupies a region of the sky in the southern constellation of Circinus that is slightly larger than the full moon. This image was compiled in October 2011.
A new study shows that our galaxy has at LEAST 100 Billion Planets. Yes, the galaxy is THAT big!
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