Picture of the Day - The Coolest Place in the Universe?

The Boomerang Nebula is a young planetary nebula and the coldest object found in the Universe so far. The Hubble Space Telescope image is yet another example of how Hubble's sharp eye reveals surprising details in celestial objects.

This Hubble Space Telescope image shows a young planetary nebula known (rather curiously) as the Boomerang Nebula. It is in the constellation of Centaurus, 5000 light-years from Earth. Planetary nebulae form around a bright, central star when it expels gas in the  [...]

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