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Astrophysics - Stars Topics

  • Now you see it, now you don't

    1999April 6, 2011

    Amateur astronomers around North America captured striking videos of The Moonas it eclipsed the bright star Regulus on May 21.

  • Lifting the veil on Hubble's Constant

    1999April 6, 2011

    This story places today's HST measurements in context with history and background information about "Hubble's Constant," along with a primer on modern cosmology.

  • Mars & Spica

    1999April 6, 2011

    This week The Red Planetand the blue-white star Spica are shining in the night sky just 1 3/4 degrees apart. It's a show that star gazers won't want to miss.

  • Studying the Mysteries of the Titanium Star

    1999April 6, 2011

    When the Chandra X-ray Observatorytook its "first light" image, it wasn't looking at just another star shining in the darkness. It was watching a foundry distribute its wares to the rest of the galaxy.

  • Taking a ringside seat for a gamma-ray burst

    1999April 6, 2011

    Supercomputers are giving scientists a ringside seat for one of the most violent events in nature, the heart of a gamma ray burst. The "collapsar" model simulates a star that is too heavy to go supernova, and thus turns itself inside out.

  • Ode to a Grecian Conference

    1999April 6, 2011

    Black holes, neutron stars and other high energy phenomena were the focus of a NATO Institute held in Crete in June, 1999.

  • The Great Leonid Meteor Stormlet of 1997

    1999Sept. 20, 2011

    Newly released video shows a flurry of Leonids in 1997 that briefly rivaled the great meteor storm of 1966.

  • Chandra Spies Structure of Huge X-Ray Jets

    1999April 6, 2011

    A new image of the Centaurus A galaxy shows x-ray jets as long as our whole galaxy is wide. The image helps give new insight into what happens when galaxies collide.

  • Sunrise at the South Pole

    1999April 6, 2011

    Today's autumnal equinox heralds the dawn of a new day at the South Pole as Earth joins three other planets in the solar system where it is autumn in the northern hemisphere.

  • Just Passing By Earth

    1999April 6, 2011

    The Cassini spacecraft has completed a highly accurate flyby of Earth, giving the spacecraft a velocity boost for its journey to distant Saturn.