Public domain
History of Chandra X-Ray Observatory
From the collection of NASA Image and Video Library. Free to download, adapt and use — no permission needed.
About this work
This spectacular Chandra X-Ray Observatory (CXO) image of the supernova remnant Cassiopeia A is the most detailed image ever made of the remains of an exploded star. The one-million-second image shows a bright outer ring (green) 10 light years in diameter that marks the location of a shock wave generated by the supernova explosion. In the upper left corner is a large jet-like structure that protrudes beyond the shock wave, and a counter-jet can be seen on the lower right.
NASA Image and Video Library’s own descriptionCredit lineHistory of Chandra X-Ray Observatory. NASA/MSFC, 2004-08-23. Public domain. ID: 0401563.