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  Experts Advise Doctors on How to Clear Patients for Space Travel

  December 13, 2012 — With the prospect of space travel for tourists looming, clinicians could soon be asked to advise on medical clearance for their patients, according to a new ... > full story
• Saturn
  Space Exploration
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  Cassini Spots Mini Nile River on Saturn's Moon Titan

  December 12, 2012 — Scientists with NASA's Cassini mission have spotted what appears to be a miniature, extraterrestrial likeness of Earth's Nile River: a river valley on Saturn's moon Titan that stretches more than 200 ... > full story
• Space Station
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  Next Step in Launching Astronauts from U.S. Soil: NASA Awards Commercial Crew Certification Contracts

  December 11, 2012 — NASA announced Dec. 10 the next step in its plan to launch American astronauts from U.S. soil, selecting three companies to conduct activities under contracts that will enable future certification of ... > full story
• Sun
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  Sungrazing Comets as Solar Probes

  December 6, 2012 — To observe how winds move high in Earth's atmosphere, scientists sometimes release clouds of barium as tracers to track how the material corkscrews, blows around, and changes composition in response ... > full story
• Mars
  NASA
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  New NASA Mars Rover to Launch in 2020

  December 4, 2012 — Building on the success of Curiosity's Red Planet landing, NASA has announced plans for a robust multi-year Mars program, including a new robotic science rover set to launch in 2020. This ... > full story
• Galaxies
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  Big Bang
   
  

  Census of the Invisible Universe Reveals Extraordinary High Star-Formation Rates Across History of the Universe

  December 4, 2012 — By combining the observing powers of ESA’s Herschel space observatory and the ground-based Keck telescopes, astronomers have characterized hundreds of previously unseen starburst galaxies, ... > full story
• Galaxies
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  Hubble Spots a Peculiar Compact Blue Dwarf Galaxy

  December 3, 2012 — The NASA/ESA Hubble Space Telescope captured an impressive image of the irregular galaxy NGC 5253. NGC 5253 is one of the nearest of the known Blue Compact Dwarf (BCD) galaxies, and is located at a ... > full story
• Saturn
  Astronomy
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  NASA
   
  

  Swirling Storms on Saturn

  December 3, 2012 — NASA's Cassini spacecraft has been traveling the Saturnian system in a set of inclined, or tilted, orbits that give mission scientists a vertigo-inducing view of Saturn's polar regions. This ... > full story
• Venus
  Solar System
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  Pluto
   
  

  Have Venusian Volcanoes Been Caught in the Act?

  December 3, 2012 — Six years of observations by the European Space Agency's Venus Express have shown large changes in the sulfur dioxide content of the planet's atmosphere, and one intriguing possible explanation is ... > full story
• Extrasolar Planets
  Asteroids, Comets and Meteors
  Kuiper Belt
  Astronomy
  Stars
  Pluto
   
  

  Do Missing Jupiters Mean Massive Comet Belts?

  November 27, 2012 — Astronomers have discovered vast comet belts surrounding two nearby planetary systems known to host only Earth-to-Neptune-mass worlds. The comet reservoirs could have delivered life-giving oceans to ... > full story

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