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  Grains of Sand from Ancient Supernova Found in Meteorites: Supernova May Have Been the One That Triggered the Formation of the Solar System

  April 22, 2013 — Scientists have discovered two tiny grains of silica (SiO2; the most common constituent of sand) in meteorites that fell to earth in Antarctica. Because of their isotopic composition these two grains ... > full story
• Galaxies
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  NASA
   
  

  Hubble Sees a Unique Cluster: One of the Hidden 15

  April 19, 2013 — Palomar 2 is part of a group of 15 globulars known as the Palomar clusters. These clusters, as the name suggests, were discovered in survey plates from the first Palomar Observatory Sky Survey in the ... > full story
• Nebulae
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  NASA's Hubble Sees a Horsehead of a Different Color

  April 19, 2013 — Astronomers have used NASA's Hubble Space Telescope to photograph the iconic Horsehead Nebula in a new, infrared ... > full story
• Extrasolar Planets
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  Three Super-Earth-Size Planets Found in 'Habitable Zone'

  April 18, 2013 — NASA's Kepler mission has discovered two new planetary systems that include three super-Earth-size planets in the "habitable zone," the range of distance from a star where the surface temperature of ... > full story

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  • New Earth-Like Planets Found Orbiting a Sun-Like Star
  • New Techniques Allow Discovery of Smallest Super-Earth Exoplanets
• Cosmic Rays
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  Distant Blazar Is a High-Energy Astrophysics Puzzle

  April 18, 2013 — Blazars are the brightest of active galactic nuclei, and many emit very high-energy gamma rays. New observations of the blazar known as PKS 1424+240 show that it is the most distant known source of ... > full story
• NASA
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  X-Ray View of a Thousand-Year-Old Cosmic Tapestry

  April 17, 2013 — A long Chandra observation reveals the SN 1006 supernova remnant in exquisite detail. By overlapping 10 different pointings of Chandra's field-of-view, astronomers have stitched together a cosmic ... > full story
• Stars
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  SOFIA Observations Reveal a Surprise in Massive Star Formation

  April 17, 2013 — Researchers using the airborne Stratospheric Observatory for Infrared Astronomy (SOFIA) have captured the most detailed mid-infrared images yet of a massive star condensing within a dense cocoon of ... > full story
• Asteroids, Comets and Meteors
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  How to Target an Asteroid

  April 17, 2013 — Like many of his colleagues at NASA's Jet Propulsion Laboratory, Pasadena, Calif., Shyam Bhaskaran is working a lot with asteroids these days. And also like many of his colleagues, the deep space ... > full story
• Galaxies
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  Massive Galaxy Had Intense Burst of Star Formation When Universe Was Only 6 Percent of Current Age

  April 17, 2013 — Astronomers find the most prolific star factory yet seen, in a far-distant galaxy that reveals important information about the cosmic environment in the early history of the ... > full story

  More: 

  • Astronomers Discover Massive Star Factory in Early Universe
• Galaxies
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  ALMA Telescope Pinpoints Early Galaxies at Record Speed

  April 17, 2013 — Astronomers have used the new ALMA (Atacama Large Millimeter/submillimeter Array) telescope to pinpoint the locations of over 100 of the most fertile star-forming galaxies in the early ... > full story

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