Physicists use two types of measurements to calculate the expansion rate of the universe, but their results do not coincide, which may make it necessary to update the cosmological model. "It's like trying to thread a cosmic ...
Astronomy
Nov 18, 2019
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755
Much mystery surrounds dark energy and the cosmological constant, the proxies used to explain the accelerating expansion of the Universe. New research suggests that an early model of dark energy presents a competing theory ...
Astronomy
Oct 29, 2020
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3549
As an astronomer, there is no better feeling than achieving "first light" with a new instrument or telescope. It is the culmination of years of preparations and construction of new hardware, which for the first time collects ...
Astronomy
Oct 29, 2019
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232
Whatever dark energy is, explanations for it have less wiggle room following a Hubble Space Telescope observation that has refined the measurement of the universe's present expansion rate to a precision where the error is ...
General Physics
May 7, 2009
12
0
Researchers from the University of Southampton, together with colleagues from the universities of Cambridge and Barcelona, have shown it's theoretically possible for black holes to exist in perfectly balanced pairs—held ...
General Physics
Oct 22, 2023
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127
(PhysOrg.com) -- Two new and independent studies have put Einstein's General Theory of Relativity to the test like never before. These results, made using NASA's Chandra X-ray Observatory, show Einstein's theory is still ...
General Physics
Apr 14, 2010
110
4
What is the universe made of? This question has driven astronomers for hundreds of years.
Astronomy
Jan 13, 2024
42
102
A new Scientific Reports study proposes an extension of the electron Born self-energy (eBse) model, unveiling a mechanism for cosmic inflation driven by a constant potential energy density, thereby challenging the conventional ...
Some 13.8 billion years ago, the universe began with a rapid expansion we call the Big Bang. After this initial expansion, which lasted a fraction of a second, gravity started to slow the universe down. But the cosmos wouldn't ...
Astronomy
Feb 6, 2024
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97
A team of researchers has analyzed more than 1 million galaxies to explore the origin of the present-day cosmic structures, as reported in a recent study published in Physical Review D as an Editors' Suggestion.
Astronomy
Dec 22, 2023
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