No civilization, no matter how successful, can last forever. What does the non-detection of intelligent aliens mean for our own longevity?…
Latest in SCIENCE
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Quantum entanglement links information between particles across space and time. So what happens when one of them falls into a black…
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Even space and time are relative in Einstein’s universe. That means our old notions of “where” and “when” no longer apply…
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This illustration shows a spacetime grid where the grid is being dragged due to rotation, but where expansion farther out causes…
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At the high temperatures achieved in the very young Universe, not only can particles and photons be spontaneously created, given enough…
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As long as there are still interactions occurring between objects in space, including gravitational collapse, nuclear transitions, stellar cataclysms, and anything…
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At the start of the hot Big Bang, the Universe was rapidly expanding and filled with high-energy, very densely packed, ultra-relativistic…
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Carl Sagan was one of the most prominent scientific figures of the 20th century, helping cofound the now-thriving field of planetary…
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This image shows the Pillars of Creation within the Eagle Nebula, as assembled by two entirely different data sets. On the…
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Many collaborations have used JWST to take deep-field images: some wider and some deeper than others. Here’s how it can surpass…