SA-Space

SA-Space

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Most galaxies have a supermassive black hole lurking at their centers, but a galaxy 10.5 billion light-years away looks like it might have two—and...

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Something weird is happening on the dwarf planet Ceres, which at 950 kilometers wide is the largest object in the Asteroid Belt. Since its...

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The universe is a dark, cold place. But it has a strange region that’s even colder than usual. Seen from Earth, it’s an area...

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After decades of studying dark matter scientists have repeatedly found evidence of what it cannot be but very few signs of what it is....

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A telescope project that has become notorious for its ballooning cost and repeated delays has lately been operating on schedule and within budget, NASA...

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SA Forum is an invited essay from experts on topical issues in science and technology. This week NASA astronaut Scott Kelly and Russian cosmonaut Mikhail Kornienko...

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Every once in a great while, something almost unspeakable happens to Earth. Some terrible force reaches out and tears the tree of life limb...

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In his 1941 short story “Nightfall,” Isaac Asimov describes a planet called Lagash that resides in a multi-star system. Constantly illuminated from all sides...

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Today marks 50 years since Alexei Leonov of the former Soviet Union floated beyond the bounds of his Voskhod 2 space capsule in the...

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Physicists are getting antsy. Their most highly prized tool for studying the smallest bits of nature—the Large Hadron Collider (LHC) particle accelerator—has been shut...