Astronomy

  1. Planetary Science

    Comet ISON fell apart earlier than realized

    Comet ISON disintegrated at least eight hours before it grazed the surface of the sun last fall, new observations show.

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  2. Planetary Science

    Rosetta spacecraft sees possible ‘double’ comet

    The comet 67P/Churyumov-Gerasimenko may actually be two objects stitched together.

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  3. Astronomy

    Voyager may not have entered interstellar space, after all

    Two scientists argue that Voyager 1 space probe is still in solar bubble, despite NASA’s announcements to the contrary.

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  4. Physics

    Diamonds under pressure impersonate exoplanet cores

    Scientists use lasers at the National Ignition Facility to squeeze diamonds to the extreme pressures found inside massive exoplanets.

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  5. Astronomy

    Supernova rapidly creates dust between stars

    Astronomers watch a shell of dust form within weeks of a star’s explosion.

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  6. Astronomy

    Rare planet circles just one of a pair of stars

    A newly discovered exoplanet orbits one star in a binary pair and shows that planets can form even with a second sun nearby.

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  7. Astronomy

    Young stars vibrate faster as they age

    Stellar pulsations provide a new way to gauge ages of infant stars.

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  8. Astronomy

    Exoplanets once trumpeted as life-friendly may not exist

    Two exoplanets considered among the most promising for hosting life may not exist, a new study suggests.

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  9. Astronomy

    Magnetic bubbles could shield astronauts from radiation

    With help from plasma and a magnet, solar storms' dangers would lessen on long space trips.

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  10. Astronomy

    Feedback

    Readers debate about what happens when an astronaut falls into a black hole, compare note-taking techniques, speculate on bat longevity and more.

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  11. Life

    A new view of dinosaurs, a clearer view of lunar origins

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  12. Astronomy

    NASA unveils space suit fit for Mars

    NASA’s newly revealed Z-2 space suit is the second mock-up of a suit that NASA hopes will eventually protect explorers walking on Mars or drilling into an asteroid.

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