Planetary Science

  1. 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.

  2. 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.

  3. 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.

  4. Planetary Science

    A Year on Mars

  5. Planetary Science

    A World Unveiled: Crème brûlée on Titan

    Penetrating the orange haze of a frigid, alien world, a space probe parachuted onto Saturn's moon Titan and unexpectedly came face-to-face with terrain that looks a lot like Earth.

  6. Planetary Science

    Ganymede May Have Vast Hidden Ocean

    A combination of images, spectra, and magnetic field measurements suggests that in addition to Jupiter's moon Europa, another Jovian moon, Ganymede, may also have had—and might still harbor—an ocean.

  7. Planetary Science

    A Titan of a Mission

    On Jan. 14, a space probe will plunge through the thick atmosphere of Saturn's moon Titan, looking for insights into the origins of life on Earth.

  8. Planetary Science

    Riddles on Titan

    Two puzzles have emerged from the Cassini spacecraft's first close flyby of Saturn's largest moon, Titan.

  9. Planetary Science

    Titanic Close-up: Cassini eyes Saturn’s big moon

    Using radar to penetrate the thick haze surrounding Saturn's moon Titan, the Cassini spacecraft has found evidence that the moon's surface is coated with hydrocarbons and dark patches that might be lakes of ethane or methane.

  10. Planetary Science

    Mars Views Hint at Early Land of Lakes

    New, high-resolution images unveiled this week not only offer supporting evidence that parts of ancient Mars resembled a land of lakes but also point out prime locations to look for fossils if life ever existed on the Red Planet.

  11. Planetary Science

    An early cosmic wallop for life on Earth?

    New evidence from lunar meteorites suggests that debris bombarded the moon some 3.9 billion years ago, about the same time that life may have formed on Earth.

  12. Planetary Science

    Mars Rovers: New evidence of past water

    Twin rovers on opposite sides of the Red Planet have found additional evidence that liquid water once flowed there.