A kaleidoscope of color 🤯💫 Cassiopeia A (Cas A) is shown in its full glory in this composite of images taken by three of our great observatories. This 300-year-old remnant created by the supernova explosion of a massive star is located about 11,000 light-years away from Earth. The different colors in this image identify details provided by each observatory. This gives astronomers a holistic view of Cas A: 🔴 Red - Infrared data from Spitzer Space Telescope reveals warm dust in the outer shell with temperatures of about 10 degrees Celsius (50 degrees Fahrenheit) 🟡 Yellow - Optical data from NASAHubble displays a delicate filamentary structure of warm gasses about 10,000 degrees Celsius 🟢 🔵Green & Blue - X-ray data from NASAChandraXray captures hot gasses at about 10 million degrees Celsius. This hot gas was likely created when ejected material from the supernova smashed into surrounding gas and dust at speeds of about 10 million miles per hour! A comparison of images should he...