A colorful, craggy column of dust and gas dubbed the Mystic Mountain stars in a picture from the Hubble Space Telescope.Hot, young stars in the nebula are constantly emitting radiation and charged particles that sculpt the cosmic cloud from the inside. Columns like this one are regions of matter dense enough to stand up to stellar erosion.
The hourglass shape of the supernova remnant SN 1987A isn't as well balanced as thought, according to an August picture of the exploded star.
Using data from an observatory in Chilea astronomers were able to confirm that, when massive stars explode, some of the ejected material gets shot into space faster than other debris, as predicted by computer models.
See more Photography from Space at National Geographic.