Amateur astronomers had 12 spectacular new images to look to during this year's Messier marathon, a skywatching challenge that happened on the weekend of March 17 and 18.
Hubble Expands Skywatching List for Messier Marathoners with New Photos
SPACE.com - 20 Mar 2018 16:50
Amateur astronomers had 12 spectacular new images to look to during this year's Messier marathon, a skywatching challenge that happened on the weekend of March 17 and 18.
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