NIST has taken part in a new push to address a persistent and growing problem in physics: the value of G. The Newtonian constant of gravitation, used to calculate the attractive force of gravity between objects, is more than ...
General Physics
Oct 28, 2014
23
3
(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 ...
A group of astronomers led by University of California, Davis has obtained new data that suggest the universe is expanding more rapidly than predicted.
Astronomy
Oct 23, 2019
89
7182
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
Engineers from Caltech have discovered that Leonardo da Vinci's understanding of gravity—though not wholly accurate—was centuries ahead of his time.
General Physics
Feb 13, 2023
0
3186
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
(Phys.org) —A trio of researchers working in France, along with a colleague from the U.K. has re-measured the gravitational constant using the same apparatus they built 12 years ago and have found a small change. In their ...
The universe is looking younger every day, it seems.
Astronomy
Sep 12, 2019
195
2987
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
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 ...
