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Blast sends star hurtling across the Milky Way

Dragon
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Blast sends star hurtling across the Milky Way Empty Blast sends star hurtling across the Milky Way

Post by Dragon Wed Jul 15, 2020 10:21 am

An exploding white dwarf star blasted itself out of its orbit with another star in a "partial supernova" and is now hurtling across our galaxy, according to a new study from the University of Warwick.

It opens up the possibility of many more survivors of supernovae traveling undiscovered through the Milky Way, as well as other types of supernovae occurring in other galaxies that astronomers have never seen before.

Continued...
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Blast sends star hurtling across the Milky Way 334pu7m
Dragon
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Post by Dragon Wed Jul 15, 2020 10:22 am

Blast sends star hurtling across the Milky Way Blastsendsst
Credit: University of Warwick/Mark Garlick

The material ejected by the supernova will initially expand very rapidly, but then gradually slow down, forming an intricate giant bubble of hot glowing gas. Eventually, the charred remains of the white dwarf that exploded will overtake these gaseous layers, and speed out onto its journey across the galaxy.

Source/ Image Courtesy


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Blast sends star hurtling across the Milky Way 334pu7m
Dragon
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Blast sends star hurtling across the Milky Way Empty Re: Blast sends star hurtling across the Milky Way

Post by Dragon Wed Jul 15, 2020 10:25 am



This animation shows the explosion of a white dwarf, an extremely dense remnant of a star that can no longer burn nuclear fuel at its core. In this "type Ia" supernova, white dwarf's gravity steals material away from a nearby stellar companion.

When the white dwarf reaches an estimated 1.4 times the current mass of the Sun, it can no longer sustain its own weight, and blows up.

Stellar explosions forge and distribute materials that make up the world in which we live, and also hold clues to how fast the universe is expanding.


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