Space

  1. Space

    Astronomers may have found first known planet in another galaxy

    The spiral-shaped Whirlpool galaxy may be home to the first planet spotted outside our own Milky Way galaxy.

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  2. Space

    Let’s learn about the hunt for alien life

    Finding any extraterrestrials, from advanced alien civilizations to simple microbes, would be an unmatched discovery.

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  3. Space

    Explainer: Calculating a star’s age

    Scientists can figure out a star's mass or composition pretty easily. Determining how old that star is, however, is a lot harder.

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  4. Space

    Let’s learn about auroras

    A gust of charged particles from the sun called the solar wind lights up auroras on Earth — and on other planets.

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  5. Planets

    NASA’s Perseverance rover grabbed its first Martian rocks

    Two finger-sized pieces of stone drilled from a basalt rock are the first bits of Mars ready to be brought to Earth.

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  6. Planets

    Pluto is no longer a planet — or is it?

    In the 15 years since Pluto lost its status as a planet, some scientists continue to use whatever definition works best for them.

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  7. Space

    Here’s an easier new way to weigh a black hole

    The timing of flickers in the gas and dust of a black hole’s accretion disk correlates to its mass, a new study finds.

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  8. Earth

    Let’s learn about meteor showers

    Meteor showers happen when Earth’s orbit passes through trails of debris left behind by comets or asteroids.

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  9. Space

    Explainer: How auroras light up the sky

    The northern and southern lights are considered natural wonders of the world. Here’s how these and related splendid sky glows form.

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  10. Planets

    Jupiter’s intense auroras heat up its atmosphere

    Jupiter’s hotter-than-expected upper atmosphere may be warmed by charged particles slamming into the air above the poles.

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  11. Space

    Let’s learn about dark matter

    Dark matter is only detectable by the gravitational pull it exerts on visible objects, like stars and galaxies.

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  12. Space

    This image may be the first look at exomoons in the making

    These observations offer some of the best evidence yet that planets around other stars have moons, or exomoons.

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