Supernova explosion

1136x640 wallpapers and backgrounds

The expanding debris cloud known as Cassiopeia A is an example of this final phase of the stellar life cycle. Light from the explosion which created this supernova remnant would have been first seen in planet Earth's sky about 350 years ago, although it took that light about 11,000 years to reach us.

Our planet has been traveling through radioactive dust for the last 33,000 years.

Astronomers have observed a violent explosion about 5 billon light-years away.

The image shows a supernova. A supernova is a powerful explosion that occurs at the end of a star's life. The explosion is so powerful that it can outshine an entire galaxy. Supernovas are responsible for creating many of the elements that we see around us, including the oxygen we breathe and the iron in our blood.

❤ Get the best Supernova Wallpaper on WallpaperSet. Only the best HD background pictures.

An exploding star hundreds of light-years from Earth may have played a role in the minor mass extinction 2.59 million years ago.

Huge stars might be born in accretion disks around supermassive black holes.