What's Hot This Week Spiral Galaxy Like Our Own Shines With Pink Clouds By Denise Chow The wispy arms of a spiral galaxy similar to our own Milky Way can be seen in striking detail in a new image from the European Southern Observatory.     Better Mars Atmosphere Maps to Come From New Mission By SPACE.com Staff An instrument on one of the next missions to Mars is expected to beam back daily maps of the Martian atmosphere from orbit and seek out gaseous clues in the ongoing search for any evidence of life on the Red Planet.     Sponsored by: Galactic 'Supervolcano' Seen Erupting With X-Rays 2 Asteroids to Zoom Between Earth and the Moon's Orbit The Strangest Alien Planets LEGO MoonBot From New Jersey Wins Competition Splattered Star-Stuff: A Supernova's Story Exposed

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