Astronomy

  1. Milky Way star cluster
    Astronomy

    The Milky Way’s most massive star cluster may have eaten a smaller cluster

    Observations of newfound stars suggest how the gathering of stars at the galaxy’s core grew so big.

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  2. NGC 6302 planetary nebula
    Space

    Stellar winds hint at how planetary nebulae get their stunning shapes

    Observations of red giant stars reveal that planets or even other stars may influence the shape of a nebula’s cloud of dust and gas.

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  3. Magnetar illustration
    Space

    Neutrinos could reveal how fast radio bursts are launched

    Highly magnetized stellar corpses called magnetars may be the source of two different cosmic enigmas: fast radio bursts and high-energy neutrinos.

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  4. MACSJ1206.2-0847 galaxy cluster
    Space

    Dark matter clumps in galaxy clusters bend light surprisingly well

    Cosmologists have found one more way to be confused by dark matter.

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  5. GW Orionis illustration
    Space

    A weirdly warped planet-forming disk circles a distant trio of stars

    The bizarre geometry of a disk of gas and dust around three stars in the constellation Orion could be formed by “disk tearing” or a newborn planet.

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  6. Colliding black hole illustration
    Physics

    Record-breaking gravitational waves reveal that midsize black holes do exist

    The biggest merger of two black holes so far raises questions about how the pair of objects came to be.

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  7. Sun's magnetic field
    Astronomy

    Check out the first-ever map of the solar corona’s magnetic field

    Solar physicists watched waves in the sun’s corona to map the whole corona’s magnetic field. Future observers could use the same technique to predict solar eruptions.

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  8. comet
    Astronomy

    In a first, astronomers spotted a space rock turning into a comet

    Scientists have caught a space rock in the act of shifting from a Kuiper Belt object to a comet. That process won’t be complete until 2063.

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  9. Hubble Space Telescope during total lunar eclipse
    Astronomy

    Hubble watched a lunar eclipse to see Earth from an alien’s perspective

    Hubble observed sunlight filtering through Earth’s atmosphere during a lunar eclipse to see what a habitable exoplanet’s atmosphere might look like.

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  10. planetary nebula NGC 2440
    Space

    Paradoxically, white dwarf stars shrink as they gain mass

    Observations of thousands of white dwarf stars have confirmed a decades-old theory about the relationship between their masses and sizes.

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  11. Protest at Mauna Kea in 2019
    Astronomy

    50 years ago, Mauna Kea opened for astronomy. Controversy continues

    Current plans to build a new telescope on the volcano sparked the latest conflict.

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  12. Large solar flare
    Physics

    The physics of solar flares could help scientists predict imminent outbursts

    Physicists aim to improve space weather predictions by studying the physical processes that spark a solar flare.

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