Black hole collisions could help us measure how fast the universe is expanding
A black hole is usually where information goes to disappear—but scientists may have found a trick to use its last moments to tell us about the history of the universe.
A black hole is usually where information goes to disappear—but scientists may have found a trick to use its last moments to tell us about the history of the universe.
Astronomy
Aug 16, 2022
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Astronomers have made a new measurement of how fast the universe is expanding, using an entirely different kind of star than previous endeavors. The revised measurement, which comes from NASA's Hubble Space Telescope, falls ...
Astronomy
Jul 16, 2019
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An international team of astronomers has created the largest ever three-dimensional map of distant galaxies in a bid to help them understand one of the most mysterious forces in the universe.
Astronomy
Jul 14, 2016
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Next time you eat a blueberry (or chocolate chip) muffin consider what happened to the blueberries in the batter as it was baked. The blueberries started off all squished together, but as the muffin expanded they started ...
Astronomy
Aug 6, 2018
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The existence of parallel universes may seem like something cooked up by science fiction writers, with little relevance to modern theoretical physics. But the idea that we live in a "multiverse" made up of an infinite number ...
General Physics
Sep 3, 2015
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The cosmological constant, introduced a century ago by Albert Einstein in his theory of general relativity, is a thorn in the side of physicists. The difference between the theoretical prediction of this parameter and its ...
General Physics
Aug 29, 2019
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Completing a nearly 30-year marathon, NASA's Hubble Space Telescope has calibrated more than 40 "milepost markers" of space and time to help scientists precisely measure the expansion rate of the universe—a quest with a ...
Astronomy
May 19, 2022
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Astronomers studying the motions of galaxies and the character of the cosmic microwave background radiation came to realize in the last century that most of the matter in the universe was not visible. About 84 percent of ...
Astronomy
Apr 20, 2018
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Astronomers have charted the largest-ever volume of the universe with a new map of active supermassive black holes living at the centers of galaxies. Called quasars, the gas-gobbling black holes are, ironically, some of the ...
Astronomy
Mar 18, 2024
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A trio of researchers with the University of Manchester, Università di Roma 'La Sapienza' and Sorbonne Universities has sparked a major debate among cosmologists by claiming that data from the Planck space observatory suggests ...