Planetary Science

  1. Planetary Science

    NASA gives up on fixing Kepler

    Space telescope’s days as a premier planet hunter are over.

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  2. Planetary Science

    Saturn’s tides drive icy moon’s plumes

    Enceladus' chilly jets ebb and flow in time with its planet's tug.

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  3. Planetary Science

    Cassini photo puts Earth in perspective

    Probe captures planet from 1.4 billion kilometers away.

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  4. Planetary Science

    Neptune gets 14th moon

    Images from Hubble Space Telescope reveal tiny, dark satellite orbiting blue-green gas giant.

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  5. Planetary Science

    Gas, not planets, may be source of rings around stars

    Interactions between gas and dust may form elliptical patterns.

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  6. Planetary Science

    Voyager 1 on fast track toward interstellar space

    More than 35 years after launch, the probe finally nears the solar system's edge.

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  7. Planetary Science

    Mystery Meteorite

    The case for (and against) a rock from Mercury.

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  8. Planetary Science

    Thirty years to Mars

    Excerpt from the June 15, 1963, issue of Science News Letter.

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  9. Health & Medicine

    Mars trip would deliver big radiation dose

    Curiosity instrument confirms expectation of major exposures.

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  10. Planetary Science

    Gone perhaps, but Kepler won’t soon be forgotten

    Astronomers look forward to building on the planet-hunting telescope's discoveries.

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  11. Astronomy

    Most Earthlike planets yet seen bring Kepler closer to its holy grail

    Space telescope finds globes that, compared with our world, are slightly larger and orbit a smaller star.

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  12. Planetary Science

    Faint Young Sun

    Scientists struggle to understand how early Earth stayed warm enough for liquid water.

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