Dying stars

Dying stars will be reborn in one

Scientists have discovered a binary system of two dying stars, known as white dwarfs,which will be collide and birth to one new star. The newly identified binary system, designated SDSS J010657.39–100003.3, is located about 7,800 light-years away in the constellation Cetus, the Whale, and was discovered as part of a survey program conducted with the MMT Observatory on Mount Hopkins, Ariz. The binary consists of a pair of white dwarfs and is located about 7800 light years from Earth in the constellation Cetus.It consists of a visible white dwarf and his invisible companion. The visible white dwarf is about 17 percent the mass of the sun, while the other white dwarf is 43 percent the mass of the sun. 

Astronomers believe that both are made of helium.These white dwarfs orbit each other at a distance of 140,000 miles (225,000 kilometers), or less than the distance from Earth to the moon. They whirl around at speeds of 1 million mph (1.6 million kph), completing one orbit in only 39 minutes.This is the shortest period of rotation of a pair of white dwarfs,which is known now. They are too close to each other and they will collide in about 37 million years.


source:www.space.com