The Biggest Chill

By Corey S. Powell|Thursday, May 01, 2003
RELATED TAGS: STARS, TELESCOPES
Nebula
Nebula
T. Sahai and J. Trauger/SPL/NASA

This Boomerang nebula is the coldest known spot in the universe. A dying star at the center expels gas at 100 miles per second, forcing the nebula to expand rapidly and to cool to 2 degrees Fahrenheit above absolute zero. This image from the Hubble Space Telescope reveals enigmatic banded structures in the exceptionally dense outflow from the star.





 
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