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Autumn aurora borealis over Knik River and the Chugach Mountains near Palmer, Alaska.Copyright Carl Johnson

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A new photo of two colorful nebulas that shine as one is making the Hubble Space Telescope's holidays bright.

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Subsurface map of moon reveals origin of mysterious impact crater rings

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Traffic Around Mars Gets Busy

Mars-Layers and ridges in rocky terrain in pale blue false color / Discover the cosmos / Fascinating Universe / Astronomy Picture

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Star Birth in NGC 346 NGC 346 is the brightest star-forming region in the Small Magellanic Cloud - a Dwarf Galaxy near our Milky Way. Massive stars have dispersed the glowing gas within and around this star cluster to form this beautiful glowing nebula.

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Bad Astronomer, Phil Plait, shares a picture of a newborn star expelling gas. When humans do it, it's gross; when stars do it, it's beautiful!

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Hubble Peers into the Most Crowded Place in the Milky Way

Hubble Sees Glittering Jewels of Messier 9

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See jaw-dropping space photos with a holiday twist in this festive gallery.

Galaxies don't normally look like this. NGC 6745 actually shows the results of two galaxies that have been colliding for only hundreds of millions of years. Just off the above digitally sharpened photograph to the lower right is the smaller galaxy, moving away. The larger galaxy, pictured above, used to be a spiral galaxy but now is damaged and appears peculiar. Gravity has distorted the shapes of the galaxies.

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The universe may not be expanding at an accelerating rate after all, meaning that mysterious "dark energy" might not actually exist, according to a new study.

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