Planetary Science

  1. Asteroid Itokawa
    Planetary Science

    Water has been found in the dust of an asteroid thought to be bone-dry

    Scientists detected water in bits of an asteroid thought to be devoid of the liquid. Such space rocks might have helped create Earth’s oceans.

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  2. exomoon
    Astronomy

    Skepticism grows over whether the first known exomoon exists

    New analyses of the data used to find the first discovered exomoon are reaching conflicting results.

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  3. asteroid Ryugu before and after crater pics
    Planetary Science

    Pictures confirm Hayabusa2 made a crater in asteroid Ryugu

    Hayabusa2’s crater-blasting success, confirmed by an image beamed back from the spacecraft, paves the way to grab subsurface asteroid dust.

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  4. Mars InSight lander
    Planetary Science

    NASA’s Mars InSight lander may have the first recording of a Marsquake

    NASA’s InSight mission appears to have detected a Marsquake for the first time.

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  5. Planetary Science

    Readers ponder Opportunity’s future, animal consciousness and more

    Readers had questions about NASA’s Opportunity rover, pollen shapes and more.

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  6. Mercury
    Planetary Science

    Mercury has a massive solid inner core

    The distribution of Mercury’s mass and small stutters in the planet’s spin suggest it has a giant solid inner core.

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  7. meteor
    Planetary Science

    A 2014 meteor may have come from another solar system

    Scientists have identified a possible interstellar meteor, and think it could be one of millions that have visited Earth over the planet’s history.

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  8. moon
    Planetary Science

    Meteor showers dig up water on the moon

    Meteorites release water from the moon’s soil, hinting that the moon has water buried all across its surface.

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  9. mosaic image of Titan
    Planetary Science

    Saturn’s moon Titan sports phantom hydrocarbon lakes

    Three lakes on Saturn’s moon Titan have pulled a vanishing act, a study finds.

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  10. Beresheet spacecraft
    Planetary Science

    Israel’s first moon mission lost moments before landing

    The spacecraft’s engine cut out just before it was to touch down in the Sea of Serenity.

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  11. Science & Society

    The delight of discovering an asteroid that spits

    Editor in Chief Nancy Shute discusses recent news about the asteroid Bennu and Kuiper Belt–object Ultima Thule.

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  12. dust plume at impact site on Ryugu's surface
    Planetary Science

    Hayabusa2 has blasted the surface of asteroid Ryugu to make a crater

    Japan’s Hayabusa2 spacecraft shot a projectile at Ryugu. Next: collecting asteroid dust from the probable impact crater left behind.

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