Planetary Science

  1. Planetary Science

    Mars Photo of the Day

  2. Planetary Science

    Roving on the Red Planet

    NASA last month selected the landing sites for rovers scheduled to begin exploring the Martian surface next January.

  3. Planetary Science

    Spacecraft reveal Mars’ molten heart

    Tracking the precise motion of a spacecraft orbiting Mars, planetary scientists have deduced that the core of the Red Planet is at least partially liquid.

  4. Planetary Science

    Red Planet

  5. Planetary Science

    Planets in Autumn

  6. Planetary Science

    Martian Gullies: Carved by melting snow?

    Melting snow may have sculpted the recently formed gullies found at midlatitudes on Mars.

  7. Planetary Science

    Space Class

  8. Planetary Science

    Forgotten Planet

    Mercury: The solar system's inner frontier.

  9. Planetary Science

    New moons for Neptune?

    Astronomers say they have discovered three additional moons circling Neptune.

  10. Planetary Science

    Martian leaks: Hints of present-day water

    In some of the coldest regions on Mars, water appears to have recently gushed from just beneath the surface, running down crater walls and steep valleys.

  11. Planetary Science

    Mars reveals more frozen water

    Planetary scientists have discovered ice near the edge of Mars' south polar cap.

  12. Planetary Science

    Fresh crater found on lunar images

    Scientists analyzing images of the moon's surface taken from lunar orbit believe they've identified the crater that formed when a small asteroid slammed into the moon almost 5 decades ago.