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We summarize the week's scientific breakthroughs every Thursday.

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  1. 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.

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  2. Astronomy

    Star Packed: Super cluster is first to be detected in Milky Way

    Astronomers have detected the most massive and densest cluster of young stars ever detected in the Milky Way, a finding that could shed light on how stars formed in the early universe.

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  3. 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.

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  4. Astronomy

    It’s a star, but not much of one

    Astronomers have discovered the smallest star known.

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  5. Astronomy

    Worlds of Astronomy

    British astronomer and writer David Darling has created an impressive, online encyclopedia devoted to topics in astronomy, astrobiology, spaceflight, space physics, and much more. From the Abell cluster to the Zwicky Catalogue, the site provides clear, straightforward explanations of a variety of concepts, along with brief biographies and much other material, including relevant images. Go […]

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  6. Astronomy

    Alien Light: Extrasolar planets are detected in new way

    Two teams of scientists report that they have for the first time directly detected the glow of planets that circle sunlike stars hundreds of light-years from Earth.

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  7. 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.

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  8. Astronomy

    Too Darn Hot

    A new theory of planet formation suggests that sizzling-hot Earths may be abundant throughout the galaxy and could soon be detected.

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  9. Planetary Science

    Saturn says ‘cheese’

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

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  10. Astronomy

    Puzzling radio blasts

    Astronomers are stumped by powerful radio waves emanating from the center of our galaxy.

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  11. Astronomy

    Weighing In on a Star: A stellar size limit

    A new study suggests that no star in our galaxy can weigh more than 150 times the mass of the sun.

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  12. 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.

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