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  • A Close Encounter with Asteroid Eros

    Oct. 26, 2000

    NASA's NEAR Shoemaker spacecraft swooped 5 kilometers above the surface of 433 Eros on Oct 26th, marking its closest-ever approach to the tumbling space rock. Scientists hope the flyby will uncover clues about extra boulders and missing craters on the near-Earth asteroid.

  • A Close Encounter with a Space Rock

    Sept. 1, 2000

    This morning a half-kilometer wide asteroid is zooming past Earth barely 12 times farther from our planet than the Moon. In cosmic terms, it's a near miss, but there is absolutely no danger of a collision. Instead, the encounter offers astronomers an unusually good opportunity to study a near-Earth asteroid.

  • Pacific Lunar Eclipse

    July 14, 2000

    This weekend the Moon, the Sun and the Earth will align for the longest total Lunar Eclipsein 140 years. The best places to see the event are in and around the Pacific Ocean, including Hawaii and Australia. Observers along the west coast of North America will be able to see a partial eclipse just before The Moonsets on Sunday morning.

  • Aphelion Day

    June 30, 2000

    The Earth will reach its greatest distance from the Sun this year on the 4th of July, but don't expect a break from the heat of northern summer. This article discusses Earth's slightly elliptical orbit and the effects (some negligible, some substantial) that lopsided orbits have on planets around the solar system.

  • Making Antibiotics in Space

    Aug. 6, 2008

  • Meltdown!

    July 31, 2000

    Comet LINEAR continued to blow itself apart this weekend as astronomers around the world monitored the action. The comet is still bright enough to see through amateur telescopes, but it's fading fast. This story compares the breakup of comet LINEAR with another famous fragmented comet, Shoemaker-Levy 9, that collided with Jupitersix years ago.

  • A Surprising Coronal Mass Ejection

    Sept. 13, 2000

    The sunspot number has been remarkably low this week, but that didn't stop the Sun from unleashing an unusual type of solar flare yesterday. As a result of the explosion, a coronal mass ejection is heading toward our planet. It could trigger an auroral display when it hits Earth's magnetosphere around Sept. 14.

  • A New Cosmic Meter Stick

    April 26, 2000

    X-rays scattered by interstellar dust grains have led scientists to develop a new way of estimating distances to cosmic objects using data from NASA's Chandra X-ray Observatory. The new technique could help astronomers in their quest to understand the size and age of the universe.

  • Hitching a Ride on a Magnetic Bubble

    Oct. 4, 2000

    NASA-funded scientists are experimenting with miniature magnetospheres as an innovative means of space transportation. If the group succeeds, next-generation spacecraft may come equipped with fuel-efficient magnetic bubbles that speed their occupants from planet to planet and ward off the worst solar flares.

  • SOHO Sees Through the Sun

    March 9, 2000

    Predicting solar activity can be tricky but now Space Weatherforecasters have a way to predict the future. Researchers using the orbiting Solar and Heliospheric Observatory have developed a new method to see what's on the far side of our star before it rotates over the Sun's limb to face Earth.