... The Apollo 12 mission was the second ever to land humans on the Moon. ... This year, humanity learned that the universe is 13.7 billion years old. ... A Dust Devil Crater on Mars . ... The Witch Head Nebula . ... This suggestively shaped reflection nebula is associated with the bright star Rigel in the constellation Orion. ... Perhaps the most famous star cluster on the sky, the Pleiades can be seen without binoculars from even the depths of a light-polluted city. ... Young Star, Dark Cloud . ...