Thursday, 19 January 2012
Helix Nebula's Molecular Knots --Each the Size of our Solar System
Helix Nebula's Molecular Knots --Each the Size of our Solar System: The Helix Nebula is one of the closest and most remarkable examples of a planetary nebula. It lies in the constellation of Aquarius (The Water Bearer), about 700 light-years away from Earth. This strange object formed when a star like...
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