Like its namesake mythological monster, the Medusa nebula appears to sport a serpentine crown in this photo taken with a 27-hour-long exposure through a backyard telescope in Huntsville, Alabama. (
See nebula pictures.)
Some 1,500 light-years distant, the hauntingly beautiful planetary nebula represents the final remnants of a long-dead star. The glowing cloud of gas and dust is constantly expanding and stretches four light-years across.
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