A picture from NASA/ESA’s Hubble Space Telescope shows the remains of a supernova – a huge explosion that marks the end of the life of a dying star. This cosmic object – known as DEM l249 – is thought to have been produced by a type 1A supernova during the death of a white dwarf. Although white dwarfs are usually stable, if they are part of a binary system, they can slowly accumulate matter.
Scientists use lasers and foam balls to successfully replicate the birth model of the solar system.
It is generally believed that type Ia supernovae originated from the thermonuclear explosion of carbon oxygen white dwarfs. The basically same peak luminosity makes them an indicator of the distance outside the Milky way and an important probe to study the expansion of the universe.