DG121 | Constellation of Puppis (the Stern) Wall Art including Frame Android phone case The blast wave travels fast

The blast wave travels fast – at about 6% the speed of light

North on Rhea is up and rotated 30 degrees to the right

IC 443 is particularly interesting because it provides a look into how stellar explosions interact with their environment

The red giant is losing matter to its small companion and occasionally ejecting matter in weird spurts

DG121 | Constellation of Puppis (the Stern) Wall Art including Frame Android phone case The blast wave travels fastThis image features DG121, an HII region a cloud of ionised hydrogen located in the constellation of Puppis (the Stern). HII regions, a type of emission nebulae, are created when young, massive stars release enough ultraviolet energy to ionise the surrounding gas clouds. These regions tend to have irregular structures and lack sharp boundaries, giving them their hazy, yet photogenic, appearance. The brightest star in the DG121 region, seen near the