Planetary Science

  1. Planetary Science

    Comet mission loses some focus

    A camera aboard the Deep Impact spacecraft, set to fire a projectile into the icy heart of Comet Tempel-1 on July 4, is slightly out of focus.

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  2. Planetary Science

    A Martian haven for life?

    Images taken by two Mars spacecraft suggest that a volcano on the Red Planet erupted long ago at the confluence of two riverbeds, indicating that the region had two of the prequisites for life: heat and water.

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  3. Planetary Science

    A moon with atmosphere

    Magnetic measurements by the Cassini spacecraft have revealed that Saturn's moon Enceladus has a tenuous atmosphere containing water vapor.

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  4. Planetary Science

    Dusty rejuvenation

    The Mars rover Spirit recently had its dirty solar arrays cleaned off, possibly by a dust devil, allowing the craft to generate nearly as much energy as it did when it first landed on the Red Planet in January 2004.

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  5. Planetary Science

    Assault on Mars

    A Mars rover has discovered a patch of soil that's the saltiest place known on the Red Planet, an indication that water once coursed through the region.

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  6. Planetary Science

    Jupiter as mirror for the sun’s X rays

    X rays emanating from Jupiter's midriff actually originate on the sun, new observations show.

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  7. Planetary Science

    Saturn says ‘cheese’

    Astronomers have assembled the largest and most-detailed global portrait of the ringed planet ever made.

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  8. Planetary Science

    Slowpoke: Atmosphere put brakes on meteorite that formed famed crater

    The extraterrestrial object that gouged out Arizona's Meteor Crater about 50,000 years ago struck at a speed much slower than most scientists had previously proposed.

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  9. Planetary Science

    Martian Landscaping: Spacecraft eyes evidence of a frozen sea

    After analyzing images taken by the orbiting Mars Express spacecraft, researchers reported that a flat region near the Red Planet's equator holds a frozen ocean that was once the size of the North Sea.

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  10. Planetary Science

    Spying Saturn’s Light Show: Anomalous aurora dazzles scientists

    The dancing lights that paint Saturn's sky stands out from all other auroras observed in the solar system.

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  11. Planetary Science

    Meteorite on Mars

    One of the twin rovers on Mars has discovered the first meteorite ever found on a planet other than Earth.

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  12. Planetary Science

    A Year on Mars

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