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We summarize the week's science breakthroughs every Thursday.

  1. Astronomy

    3-D solar eruptions

    Solar physicists have developed a technique to obtain the three-dimensional structure of coronal mass ejections by using two-dimensional images from the Solar and Heliospheric Observatory.

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  2. Astronomy

    One of Hubble’s Tools Fails: Observatory loses a sharp ultraviolet eye

    With the failure last week of an instrument on the Hubble Space Telescope, astronomers have lost their only sharp ultraviolet eye on the universe.

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  3. Astronomy

    Old stars shed light on young Milky Way

    Analyzing the composition of 70 of the oldest stars in the galaxy—the largest such sample so far—scientists have found new evidence that a generation of short-lived stars that died explosively must have preceded this elderly population and that the oldest part of the Milky Way originated not as a single component, but as bits and pieces that may have taken several hundred million years to form and coalesce.

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  4. Planetary Science

    The sound of rings

    When Cassini reached Saturn on June 30, it twice dashed through a gap in the planet's rings, and onboard science instruments recorded a flurry of ring dust harmlessly striking the spacecraft.

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  5. Planetary Science

    Meteorites quickly reach Earth

    Fragments from collisions between large bodies in the asteroid belt can reach Earth in as little as 100,000 years.

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  6. Astronomy

    Explosive News: Telescopes find signs of gentler gamma-ray bursts

    Astronomers appear to have discovered an unexpected population of low-energy gamma-ray bursts, and they could be 10 times more numerous than previously-known higher-energy bursts.

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  7. Astronomy

    Young star’s glow suggests planet find

    The X-ray outburst of a young, sunlike star might provide new insights about planet formation.

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  8. Planetary Science

    A little bit of Mars on Earth

    Scouring an ice field in Antarctica, scientists have made the latest discovery of a chunk of rock that was blasted from Mars and fell to Earth.

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  9. Astronomy

    Universal Truths: Distant quasars reveal content, age of universe

    Using quasars as searchlights on the distant universe, astronomers have mapped the distribution of gas between galaxies with unprecedented precision, allowing precise determinations of the age of the universe.

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  10. Astronomy

    Cassini eyes Iapetus

    Only a few days after it entered orbit around Saturn, the Cassini spacecraft captured an image of Saturn's split- personality moon Iapetus.

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  11. Astronomy

    Two newly found space molecules

    Researchers have detected two new organic chemicals in a large interstellar cloud.

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  12. Astronomy

    End of the Line for Hubble?

    With a space shuttle mission to repair and upgrade the Hubble Space Telescope now canceled, astronomers are pondering how to best use the flying observatory during its final years.

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