Space

  1. Physics

    Scientists Say: Dark Energy

    Dark energy is the unknown force causing the universe to expand faster and faster.

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  2. Space

    Wild art? No, it’s a radio image of the heart of our Milky Way

    Eyelash-like radio filaments accent the brightest feature in this image — a supermassive black hole.

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  3. Planets

    No, organic molecules alone don’t point to life on Mars

    These carbon-based molecules, found in a meteorite, may reflect merely a mixing of water and minerals on the Red Planet over billions of years.

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  4. Health & Medicine

    Here’s how a new sleeping bag could protect astronauts’ eyesight

    A new sleeping bag could avoid vision problems on long space flights due to microgravity. It counters a fluid buildup behind astronauts’ eyes.

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  5. Physics

    Explainer: Gravity and microgravity

    The force of gravity holds us on the ground, keeps planets in orbit and extends throughout space. A very weak gravitational pull is called microgravity.

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  6. Space

    Explainer: Telescopes see light — and sometimes ancient history

    Different kinds of telescopes on Earth and in space help us to see all wavelengths of light. Some can even peer billions of years back in time.

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  7. Space

    The long-awaited James Webb Space Telescope has a big to-do list

    The James Webb Space Telescope has been in the works for so long that new fields of science have emerged for it to study.

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  8. Space

    Scientists Say: Solar wind

    This is a powerful gust of charged particles that flows out from the sun through the solar system.

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  9. 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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  10. 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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  11. 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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  12. 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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