Rings of glowing gas are all that remain of a supernova explosion. While this star ended its life in a spectacular eruption of energy and material more than 170,000 years ago, light from the catastrophe didn’t reach Earth until 1987.
Once it burned bright in the sky and then faded to the glowing rings as shown in the picture.
Monday, September 28, 2009
Subscribe to:
Post Comments (Atom)
No comments:
Post a Comment