Planetary Science

  1. Planetary Science

    Saturnian moonscape

    Planetary scientists have obtained their closest image yet of Epimetheus, one of Saturn's tiny moons.

  2. Planetary Science

    Far-out science

    New measurements show that the planetoid Sedna spins more rapidly than earlier observations had suggested.

  3. Planetary Science

    The Huygens Chronicles

    After several months of painstaking work analyzing data from the Huygens probe, planetary scientists are able to see the surface of Saturn's moon Titan in greater detail than ever before.

  4. 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.

  5. 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.

  6. 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.

  7. 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.

  8. 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.

  9. 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.

  10. Planetary Science

    Saturn says ‘cheese’

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

  11. 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.

  12. 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.