general relativity
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Black Holes Could Be Expanding Along With the Universe
In 2015, two black holes were caught merging when the ripples in spacetime they created were detected on Earth. Since then, gravitational wave detectors have found many more of these mergers, broadening our understanding of the most epic collisions known to science. Now, a team of astrophysicists examining data from these detections are proposing that…
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Physicists Measure the Smallest Gravitational Field Ever Detected
Over the Christmas season of 2019, four physicists hovered over two minuscule gold orbs, each about the size of a ladybug, in a Vienna laboratory. It was silent, in all the ways you can imagine: audibly, seismically, even electromagnetically. It had to be, as the researchers were trying to detect the influence of one of…
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Astrophysicists Observe Star Dragging Space-Time
Scientists have observed a spinning star dragging space-time along with it, according to a new paper.
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Supermassive Black Hole Stretches Starlight, Proving Einstein Right Again
Albert Einstein’s theory of general relativity is magnificent. For a hundred years, it has consistently predicted all sorts of wacky phenomena scientists have later observed throughout space. One international team is now announcing that a 26-year-long observation campaign has once again confirmed the theory.