Supernovas

A supernova is an exploding star that can become billions of times bright as the sun before gradually fading from view. In the middle of the explosion this blast may outshine an entire galaxy. The blast can "Throw" a large cloud of dust and gas into deep space. The mass of the expelled material may be at least 10 times greater than the sun's mass. If a white dwarf reaches a mass of about 1.4 times greater than the sun it would collapse and blow up.