Space

  1. Planetary Science

    Do-it-yourself solar system

    If you've always wanted to build your own solar system, roll up your sleeves — SuperPlanetCrash is an online solar system simulator, set up as a game.

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  2. Astronomy

    Feedback

    Readers discuss the speed of spinning particles, what defines a planet and how to see invisible shrimp.

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  3. Astronomy

    Young, hot exoplanet takes title for longest year

    Newly discovered exoplanet sits a whopping 2,000 times farther from its star than Earth does from the sun.

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  4. Planetary Science

    Titan’s haze gives clues to clouds on exoplanets

    Titan’s hazy atmosphere may help astronomers better understand what’s going on in the clouds of exoplanets.

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  5. Cosmology

    2014 Kavli Prize winners announced

    Cosmic inflation, nanoscale imaging and a better understanding of memory earn million-dollar honors with the Kavli Prize.

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  6. Astronomy

    Sun shines new life on Kepler space telescope

    NASA approved a proposal to bring the crippled Kepler spacecraft back to life, using sunlight as balance to help the telescope search for planets and more.

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  7. Cosmology

    Dustup emerges over gravitational waves discovery

    While cosmologists wait for data from Planck satellite, some worry that BICEP2 data actually come from our galaxy.

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  8. Planetary Science

    Rosetta spacecraft’s comet develops dusty envelope

    Comet 67P/Churyumov-Gerasimenko, the target of ESA’s Rosetta mission, has developed a dust coma.

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  9. Astronomy

    Sun’s sibling spotted

    A nearby star may have come from the same birth cluster as the sun; learning how to find other solar siblings could point the way to their common origin.

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  10. Cosmology

    The mysterious boundary

    A debate has arisen over whether an astronaut passing a black hole’s point of no return would get stretched to death or flash-fried. Resolving the controversy may lead to new insights about gravity and more.

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  11. Cosmology

    Revamping the size of the universe

    Despite new telescopes and technology, no one knows whether the universe is infinitely large or even if what has been observed is the only universe that exists.

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  12. Astronomy

    Milky Way’s far side reveals some secrets

    Variable stars provide first direct measurements of distance to the far side of the Milky Way.

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