8bitfuture: This is the Cassiopeia A supernova remnant, as captured by NASA’s Chandra X-ray Observatory. It shows the 300-year old remains of a stellar explosion that blew a massive star apart, sending the stellar debris rushing into space at millions
8bitfuture: This is the Cassiopeia A supernova remnant, as captured by NASA’s Chandra X-ray Observatory. It shows the 300-year old remains of a stellar explosion that blew a massive star apart, sending the stellar debris rushing into space at millions