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Monday, 17 June 2019

The Boomerang Nebula: coldest place in the known Universe

The Boomerang Nebula


The Boomerang Nebula is the coldest place or object in the known Universe. It has a temperature of 1 K (−272.15 °C; −457.87 °F), that is only one degree above the lowest possible temperature. The Nebula is 5,000 light years away from the Earth.

The Boomerang Nebula, photographed by Hubble Space Telescope -

The Boomerang Nebula continues to form and develop due to the outflow of gas from its center where a star in its late stage life sheds mass and emits starlight illuminating dust in the Nebula. The outflowing gas is expanding rapidly into the space at a speed of 164 km/s.

The Boomerang Nebula as seen by ALMA.
The Nebula was discovered in 1980 by Keith Taylor and Mike Scarrott. They observed it with the Anglo-Australian.

Telescope at the Siding Spring Observatory. The astronomers weren't able to see it with clarity, but the data collected by them suggested a curved shape like a boomerang.

Thus they named it Boomerang Nebula. It is also referred as 'Bow Tie Nebula'. In 1998 the Nebula was photographed in detail by the Hubble Space Telescope. In mid - 2017, it was suggested that the star at the center of the Nebula is a dying 'Red Giant' star.

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