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Is Gravity Just Entropy Rising? Long-Shot Idea Gets Another Look.
...Entropy quantifies this growth of disorder. Indeed, when physicists used quantum mechanics to study what happens in the distorted space-time around a black hole, they find that black holes give...
A New Geometry for Einstein’s Theory of Relativity
...and how planets, stars and galaxies move. It tells us that the universe is expanding, and it predicted the existence of both black holes and gravitational waves a century before...
AI Comes Up With Bizarre Physics Experiments. But They Work.
...fabric coming from the faraway collision of a pair of black holes. Rana Adhikari, a physicist at the California Institute of Technology, led the detector optimization team in the mid-2000s....
Why Did The Universe Begin?
...made that black holes radiate, that quantum processes are responsible for this, and that this radiation could be captured by purely spatial geometries. And that was the inspiration to try...
Astrophysicists Find No ‘Hair’ on Black Holes
...a quantum combination, or superposition, of many different configurations of space-time, making the black hole’s edges fuzzy. Other ideas include “gravastars” that resemble black holes but are surrounded by shells...
A Single, ‘Naked’ Black Hole Rewrites the History of the Universe
...of the galaxy formation process, which did not start with black holes. Black holes were thought to have come along only after a galaxy’s stars gravitationally collapsed into black holes...
Carlo Rovelli’s Radical Perspective on Reality
...research is wide-ranging, running the gamut from quantum information to black holes, and often delves into the history and philosophy of science. In the late 1980s, he helped develop a...
New Proofs Probe Soap-Film Singularities
...— in proofs of important conjectures in geometry and topology, in the study of cells and black holes, and even in the design of biomolecules. “They’re very beautiful objects to...
Cosmic Paradox Reveals the Awful Consequence of an Observer-Free Universe
Encouraged by successes in understanding black holes, theoretical physicists are applying what they’ve learned to whole universes. What they’re finding has them questioning fundamental assumptions about how physics ought to...