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How many black holes are there in the universe?Opinion In a recent study, researchers determined that about 1% of all the "normal" (that is, not dark) matter in the universe is bound up inside black holes.
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What if the universe had no beginning? -
Travel through galaxies and the dark matter web in this stunning universe simulationA new freely downloadable universe simulation reveals the structure of galaxies and galactic clusters over more than 13 billion years of history.
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Is dark matter made of 'Fermi balls' forged in the Big Bang?A new theory suggests dark matter may have come from quantum bags that got squished together in the early universe.
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What color is the universe?Scientists have figured out the average color of the universe by recording visible light from more than 200,000 galaxies.
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4 bizarre Stephen Hawking theories that turned out to be right (and 6 we're not sure about)Countdown Some of Hawking's theories revolutionized the way we view the universe, but others still leave scientists scratching their heads.
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Our universe might be a giant three-dimensional donut, really.Astrophysicists say our universe might be shaped like a three-dimensional donut, meaning you could point a spaceship in one direction and eventually return to where you started.
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How many atoms are in the observable universe?Atoms are the building blocks of all matter in the universe, but how many are there in the part of it we can see from Earth?
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Rare 'hypernova' explosion detected on fringes of the Milky Way for the first timeResearchers found evidence of an elusive magneto-rotational hypernova explosion for the first time ever.
