(PhysOrg.com) --Almost 400,000 years after the universe was created in the big bang, matter cooled sufficiently for neutral atoms to form, thereby allowing the pervasive light to propagate almost completely unhindered.
Astronomy
Apr 12, 2010
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2
After the Big Bang, the universe, glowing brightly, was opaque and so hot that atoms could not form. Eventually cooling down to about minus 454 degrees Fahrenheit (-270 degrees Celsius), much of the energy from the Big Bang ...
Astronomy
Jan 12, 2022
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317
An axion is a hypothetical elementary particle whose existence was postulated in order to explain why certain subatomic reactions appear to violate basic symmetry constraints, in particular symmetry in time. The 1980 Nobel ...
Astronomy
Jan 22, 2018
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Our knowledge of the big bang has increased dramatically in the past decade, as satellites and ground-based studies of the cosmic microwave background have refined parameters associated with the very early universe, achieving ...
Astronomy
May 11, 2015
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116
With blue hues suggestive of marine paradises and a texture evoking the tranquil flow of sea waves, this image might make us daydream of sandy beaches and exotic holiday destinations. Instead, the subject of the scene is ...
Astronomy
May 20, 2015
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67
It was dubbed a "spectacular" discovery – even "Nobel prize-worthy".
General Physics
Sep 30, 2014
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Do constants of nature—the numbers that determine how things behave, like the speed of light—change over time as the universe expands? Does light get a little tired traveling vast cosmic distances? It was believed that ...
Astronomy
Jul 9, 2024
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66
(Phys.org)—A team of researchers analyzing data from a telescope aboard the European Space Agency's Planck spacecraft gave a presentation at Planck 2014 recently—a meeting held in a palace in Italy—to outline findings ...
What happened in the first trillionth of a trillionth of a trillionth of a second after the Big Bang? Super-sensitive microwave detectors, built at the National Institute of Standards and Technology, may soon help scientists ...
General Physics
May 3, 2009
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0
Astronomers are currently pushing the frontiers of astronomy. At this very moment, observatories like the James Webb Space Telescope (JWST) are visualizing the earliest stars and galaxies in the universe, which formed during ...
Astronomy
Nov 1, 2023
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