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  NASA's SDO Shows a Little 'Rain' on the Sun

  February 20, 2013 — Eruptive events on the sun can be wildly different. Some come just with a solar flare, some with an additional ejection of solar material called a coronal mass ejection, and some with complex moving ... > full story
• Extrasolar Planets
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  NASA's Kepler Mission Discovers Tiny Planet System: Smallest Planet Yet Found Around a Star Similar to Our Sun

  February 20, 2013 — NASA's Kepler mission scientists have discovered a new planetary system that is home to the smallest planet yet found around a star similar to our sun. The planets are located in a system called ... > full story
• Solar System
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  Searching for the Solar System's Chemical Recipe

  February 20, 2013 — The ratio of isotopes in elements like oxygen, sulfur, and nitrogen were once thought to be much the same everywhere, determined only by their different masses. Then isotope ratios in meteorites, ... > full story
• Stars
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  Sun's Next-Door Twin: Cool Layer in the Atmosphere of Alpha Centauri A

  February 20, 2013 — The European Space Agency's Herschel space observatory has detected a cool layer in the atmosphere of Alpha Centauri A, the first time this has been seen in a star beyond our own Sun. The finding is ... > full story
• Geomagnetic Storms
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  Six Years in Space for THEMIS: Understanding the Magnetosphere Better Than Ever

  February 20, 2013 — On Earth, scientists can observe weather patterns, and more importantly can predict them, through the use of tens of thousands of weather observatories scattered around the globe. Up in the space ... > full story
• Astronomy
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  Cassini Sheds Light on Cosmic Particle Accelerators

  February 19, 2013 — During a chance encounter with what appears to be an unusually strong blast of solar wind at Saturn, NASA's Cassini spacecraft detected particles being accelerated to ultra-high energies. This is ... > full story
• Extrasolar Planets
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  Pluto
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  Kuiper Belt
   
  

  Hunt for Distant Planets Intensifies

  February 18, 2013 — Armed with new tools, astronomers search for worlds like ... > full story
• Space Exploration
  NASA
  Geomagnetic Storms
  Atmosphere
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  Tiny CREPT Instrument to Study the Radiation Belts

  February 15, 2013 — A smaller version of an instrument now flying on NASA's Van Allen Probes has won a coveted spot aboard an upcoming NASA-sponsored Cubesat mission -- the perfect platform for this pint-size, ... > full story
• Asteroids, Comets and Meteors
  Near-Earth Object Impacts
  Earth Science
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  Near-Earth Asteroid Makes Preview Appearance

  February 14, 2013 — Like trailers for the coming attraction, new images show asteroid 2012 DA14 on its way to a record-close approach to Earth on Feb. 15. One image, taken by amateur astronomer Dave Herald of ... > full story
• Saturn
  Solar System
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  Unlocking the Mystery Behind Saturn's Moonlets

  February 14, 2013 — New research by physicists casts new light on Saturn's moonlets -- and could help solve some of the mysteries surrounding planet formation. Saturn's F ring has long been of interest to scientists as ... > full story

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