Astronomy

  1. Illustration of TOI-178 system
    Astronomy

    Two exoplanet families redefine what planetary systems can look like

    The TRAPPIST-1 and TOI-178 systems, both home to multiple bunched-up planets, have densities and orbits that defy expectations.

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  2. Tibet AS-gamma experiment
    Physics

    The Milky Way’s newfound high-energy glow hints at the secrets of cosmic rays

    Gamma rays with energies approaching a quadrillion electron volts emanate from the disk of the Milky Way.

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  3. Kepler-186f
    Space

    Crushed space rocks hint at exoplanets’ early atmospheric makeup

    Experiments that heat crushed-up meteorites are helping astronomers understand what to look for in exoplanet atmospheres.

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  4. cold quasar illustration
    Astronomy

    Astronomers spotted a rare galaxy shutting down star formation

    A distant galaxy harbors an active black hole and active star formation at the same time – an unusual coincidence.

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  5. a flare from a magnetar, illustrated
    Space

    The first magnetar flare detected from another galaxy was tracked to its home

    An outburst from the super magnetic remains of a star suggests similar eruptions are behind some of the most powerful explosions in the universe.

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  6. illustration of quasar J0313-1806
    Space

    The most ancient supermassive black hole is bafflingly big

    The farthest known quasar challenges ideas about how the first supermassive black holes in the universe formed.

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  7. Parker Solar Probe illustration
    Space

    The Parker Solar Probe will have company on its next pass by the sun

    The probe is about to make another close pass of the sun. This time, Solar Orbiter, BepiColombo and others will be watching too.

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  8. Milky Way galactic center
    Astronomy

    The Milky Way’s central black hole may have turned nearby red giant stars blue

    A powerful blast from the supermassive black hole at the Milky Way’s center may explain the lack of large, red stars there.

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  9. Milky Way X-ray bubbles
    Astronomy

    Enormous X-ray bubbles balloon from the center of the Milky Way

    Images from the the eROSITA telescope reveal X-ray–emitting blobs surrounding gamma-ray bubbles.

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  10. Arecibo telescope
    Space

    Here are 10 of Arecibo’s coolest achievements

    The now-defunct Arecibo radio telescope in Puerto Rico made myriad discoveries over its 57-year run, including of pulsar planets and ice on Mercury.

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  11. Collapsed Arecibo telescope
    Space

    Why losing Arecibo is a big deal for astronomy

    The radio telescope at the Arecibo Observatory has collapsed, robbing scientists of a special tool for studying everything from asteroids to galaxies.

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  12. Geminid meteor shower
    Space

    December’s stunning Geminid meteor shower is born from a humble asteroid

    Most meteor showers arise from comets, but the robust Geminid shower comes from an asteroid, Phaethon, which scientists are still trying to figure out.

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