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  • Close Encounter with Mars

    Close Encounter with Mars

    Jan. 26, 2010

    This week Earth and Mars are having a close encounter. On Jan. 27th, The Red Planetwill be only 99 million kilometers away and look bigger through a telescope than at any time between 2008 and 2014.

  • Mystery of the Giant Ribbon, Solved?

    Mystery of the Giant Ribbon, Solved?

    Jan. 15, 2010

    Evidence is mounting that a strong magnetic field lurks just beyond the edge of the solar system. This could explain the recent discovery of a "giant ribbon" in space by NASA's IBEX spacecraft.

  • Alien Planet Safari

    Alien Planet Safari

    Jan. 14, 2010

    NASA's next great observatory, the James Webb Space Telescope, is designed to study stars and galaxies. Astronomers are beginning to realize, however, that Webb will make a great planet hunter too.

  • Flying Telescope Passes Key Test

    Flying Telescope Passes Key Test

    Jan. 8, 2010

    Most astronomers wouldn't dream of opening their observatory's doors in 100 mph winds. Yet NASA's new SOFIA telescope recently flew in an airplane at 250 mph with doors wide open.

  • Why Won't the Supernova Explode?

    Why Won't the Supernova Explode?

    Jan. 7, 2010

    NASA is building a new space telescope named "NuSTAR" to answer a question that has been vexing astrophysicists for decades: Why won't the supernova explode?

  • Kepler Discovers Five Exoplanets

    Kepler Discovers Five Exoplanets

    Jan. 4, 2010

    NASA's Kepler space telescope, designed to find Earth-size planets in the habitable zone of sun-like stars, has discovered its first five new exoplanets.