Planetary Science

  1. Planetary Science

    Reviewers see red over recent Mars programs

    NASA's two most recent missions to Mars failed because they were underfunded, managed by inexperienced people, and insufficiently tested, according to a report released March 28.

  2. Planetary Science

    Unveiling Mars’ watery secret

    A new gravity map of Mars has revealed a network of buried channels that billions of years ago may have been on the surface and helped carry water to fill an ancient ocean.

  3. Planetary Science

    Meteoric wallop may have diversified life

    A new study suggests that the evolutionary burst on Earth some 540 million years ago occurred around the time that cosmic debris began pummeling our planet at an increasing rate.

  4. Planetary Science

    Pluto and the Occult: Rare events illuminate Pluto’s atmosphere

    Twice in the past month, astronomers were given a rare opportunity to peer through the tenuous atmosphere of Pluto.

  5. Planetary Science

    Planetary Beginnings: Data reveal Earth’s quick gestation

    Two new studies confirm that Earth's core formed in a hurry—during the first 30 million years after the solar system's birth.

  6. Planetary Science

    It’s only a sharper moon

    Astronomers have taken what appears to be the sharpest image of the moon ever recorded from Earth.

  7. Planetary Science

    Lost in Space: Comet mission appears to have broken apart

    A spacecraft that had just begun its journey to two comets has fallen silent and may have broken apart.

  8. Planetary Science

    Tryst in space: Craft, asteroid rendezvous

    On Valentine's Day, the NEAR spacecraft cozied up to the asteroid 433 Eros, becoming the first craft to orbit a tiny body.

  9. Planetary Science

    Life on Europa: A possible energy source

    New evidence supports the notion that Jupiter's moon Europa contains an ocean beneath its icy surface, and a planetary scientist has proposed a novel way that Europa could be getting the energy required to sustain life within that ocean.

  10. Planetary Science

    Pristine fragments of asteroid breakup

    Planetary scientists have for the first time precisely dated a collision that smashed an asteroid into fragments.

  11. Planetary Science

    Odyssey’s Homer: Hints of water near both poles of Mars

    Sensors on board the Mars Odyssey spacecraft have spied strong signs of ice buried near both poles of the Red Planet, exactly the regions where scientists previously had said that such frozen water deposits could exist.

  12. Planetary Science

    Hard bodies pair off

    About one out of every eight asteroids traveling near Earth has a rocky companion.