Best Space Photos of the Week – Dec. 20, 2015

Dust Devil 'Swarm' Races Across Martian Plain

NASA/JPL-Caltech/University of Arizona (Edit by Ian O'Neill/Discovery News)

By now most of us know that Mars is a windy planet (well, not as windy as “The Martian” would have us believe), where active aeolian processes shape the landscape continuously. Active dune fields are evidence of the large-scale transport of fine Mars sand whereas dust devils (like miniature tornadoes) show us the small scale and short-lived atmospheric processes that can sculpt dark tracks into the surface. [Read the full story.]

Dust Devil 'Swarm' Races Across Martian Plain

NASA/JPL-Caltech/University of Arizona

By now most of us know that Mars is a windy planet (well, not as windy as “The Martian” would have us believe), where active aeolian processes shape the landscape continuously. Active dune fields are evidence of the large-scale transport of fine Mars sand whereas dust devils (like miniature tornadoes) show us the small scale and short-lived atmospheric processes that can sculpt dark tracks into the surface. [Read the full story.]

Cosmic Lightsaber Slices Through Clouds in Awesome New Image

ESA/Hubble & NASA, D. Padgett (GSFC), T. Megeath (University of Toledo), and B. Reipurth (University of Hawaii)

A powerful lightsaber slices through the dark clouds of dust and gas that surround it. It's not a scene from the new "Star Wars" movie but an image captured by NASA's Hubble Space Telescope. [Read the full story.]

Cosmic Lightsaber Slices Through Clouds in Awesome New Image

NASA, ESA, Digitized Sky Survey 2; Acknowledgement: Davide De Martin

A powerful lightsaber slices through the dark clouds of dust and gas that surround it. It's not a scene from the new "Star Wars" movie but an image captured by NASA's Hubble Space Telescope. [Read the full story.]

Incredible New Photos Reveal Pluto's Pits and Other Terrain

NASA/JHUAPL/SwRI

Pluto's complex geology just got a little less mysterious thanks to two incredible new photos from NASA's New Horizons spacecraft.[Read the full story.]

Incredible New Photos Reveal Pluto's Pits and Other Terrain

NASA/JHUAPL/SwRI

Pluto's complex geology just got a little less mysterious thanks to two incredible new photos from NASA's New Horizons spacecraft.[Read the full story.]

Strange Patterns on Mars

NASA/JPL-Caltech/Univ. of Arizona

Bright and dark patterns with curving boundaries are seen on the surface of Mars. Image released Dec. 10, 2015. [Read the full story.]

Planetary Nebula NGC 3699

ESO

NGC 3699 is a planetary nebula imaged by the ESO Faint Object Spectrograph and Camera (EFOSC2) at ESO's La Silla Observatory. Image released Dec. 14, 2015. [Read the full story.]

2015 Geminid Meteor Over Missouri

Eddie Popovits

Astrophotographer Eddie Popovits sent in a photo of a Geminid meteor streaking through the sky over Branson, Missouri, on Dec. 15, 2015. [Read the full story.]

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Space.com is the premier source of space exploration, innovation and astronomy news, chronicling (and celebrating) humanity's ongoing expansion across the final frontier. Originally founded in 1999, Space.com is, and always has been, the passion of writers and editors who are space fans and also trained journalists. Our current news team consists of Editor-in-Chief Tariq Malik; Editor Hanneke Weitering, Senior Space Writer Mike Wall; Senior Writer Meghan Bartels; Senior Writer Chelsea Gohd, Senior Writer Tereza Pultarova and Staff Writer Alexander Cox, focusing on e-commerce. Senior Producer Steve Spaleta oversees our space videos, with Diana Whitcroft as our Social Media Editor.