Study finds the universe might be 2 billion years younger
The universe is looking younger every day, it seems.
Astronomy
Sep 12, 2019
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2987
News tagged with gravitational constant
New method may resolve difficulty in measuring universe's expansion
Astronomers using National Science Foundation (NSF) radio telescopes have demonstrated how a combination of gravitational-wave and radio observations, along with theoretical modeling, can turn the mergers of pairs of neutron ...
Astronomy
Jul 8, 2019
190
1275
Ten years before the detection of gravitational waves, two KITP postdocs at UC Santa Barbara had a novel idea
The history of science is filled with stories of enthusiastic researchers slowly winning over skeptical colleagues to their point of view. Astrophysicist Scott Hughes can relate to these tales.
Astronomy
Apr 2, 2019
0
36
How to use gravitational waves to measure the expansion of the universe
On the morning of Aug. 17, 2017, after traveling for more than a hundred million years, the aftershocks from a massive collision in a galaxy far, far away finally reached Earth.
Astronomy
Mar 29, 2019
6
123
Gravitational waves will settle cosmic conundrum
Measurements of gravitational waves from approximately 50 binary neutron stars over the next decade will definitively resolve an intense debate about how quickly our universe is expanding, according to findings from an international ...
General Physics
Feb 14, 2019
8
2818
Two new ways to measure the gravitational constant
A team of researchers affiliated with several institutions in China and one in Russia has devised two new ways to measure the gravitational constant. In their paper published in the journal Nature, the group describes the ...
Quest to settle riddle over Einstein's theory may soon be over
Astronomy experiments could soon test an idea developed by Albert Einstein almost exactly a century ago, scientists say.
General Physics
Feb 10, 2017
29
1011
Gravitational constant appears universally constant, pulsar study suggests
Gravity, one of the four fundamental forces of nature, appears reassuringly constant across the Universe, according to a decades-long study of a distant pulsar. This research helps to answer a long-standing question in cosmology: ...
Astronomy
Aug 6, 2015
74
6622
Best of Last Week–Variance of gravitational constant, 50 years of Moore's Law and creating the sensation of invisibility
It was an interesting week in physics as researchers delved into the question of why the measurements of the gravitational constant vary so much. The latest theory suggests that it is not likely attributable to systematic ...
Why do measurements of the gravitational constant vary so much?
(Phys.org)—Newton's gravitational constant, G, has been measured about a dozen times over the last 40 years, but the results have varied by much more than would be expected due to random and systematic errors. Now scientists ...
