Using a model of black holes, scientists from the Ural Federal university (UrFU, Yekaterinburg) determined that a popular theory of gravity that seemed to work perfectly at the cosmological level (a subclass of Horndeski ...
General Physics
Oct 27, 2017
29
6298
Einstein's theory of general relativity has withstood 100 years of experimental scrutiny. However, these tests do not constrain how well the very strong gravitational fields produced by merging neutron stars obey this theory. ...
Astronomy
Oct 24, 2017
3
24
(Phys.org)—Using data from the first-ever gravitational waves detected last year, along with a theoretical analysis, physicists have shown that gravitational waves may oscillate between two different forms called "g" and ...
At the center of our galaxy, roughly 26,000 light years from Earth, lies the supermassive black hole (SMBH) known as Sagittarius A*. Measuring 44 million km across, this object is roughly 4 million times as massive as our ...
Astronomy
Aug 14, 2017
3
5662
Heatwaves amplified by high humidity can reach above 40°C and may occur as often as every two years, leading to serious risks for human health. If global temperatures rise with 4°C, a new super heatwave of 55°C can hit ...
Environment
Aug 9, 2017
0
67
A novel porous material can soak up excessive humidity in a room only to release it again when the humidity falls. Now KAUST researchers have devised a metal-organic framework (MOF) material that monitors its own properties.
Materials Science
Aug 7, 2017
0
3
There was a lot of excitement last year when the LIGO collaboration detected gravitational waves, which are ripples in the fabric of space itself. And it's no wonder – it was one of the most important discoveries of the ...
Astronomy
Jul 18, 2017
0
22
Einstein's 1915 theory of gravitation, also known as General Relativity, is now considered one of the pillars of modern physics. It contributes to our understanding of cosmology and of fundamental interactions between particles. ...
General Physics
Jul 12, 2017
7
18
A renewed suggestion that dark energy may not be real—dispensing with 70% of the stuff in the universe—has reignited a longstanding debate.
General Physics
Jun 29, 2017
20
268
Astronomers at The University of Texas at Austin and Harvard University have put a basic principle of black holes to the test, showing that matter completely vanishes when pulled in. Their results constitute another successful ...
Astronomy
May 30, 2017
30
2214
