(Phys.org)—Although quantum theory can explain three of the four forces in nature, scientists currently rely on general relativity to explain the fourth force, gravity. However, no one is quite sure of how gravity works ...
(Phys.org)—Dark energy, a mysterious substance thought to be speeding up the expansion of the Universe is really there, according to a team of astronomers at the University of Portsmouth and LMU University Munich.
Astronomy
Sep 12, 2012
144
0
(PhysOrg.com) -- Some six billion light years distant, almost halfway from now back to the big bang, the universe was undergoing an elemental change. Held back until then by the mutual gravitational attraction of all the ...
Astronomy
Mar 30, 2012
67
0
(PhysOrg.com) -- Scientists have made many discoveries about the origins of our 13 billion-year-old universe. But many scientific mysteries remain. What exactly happened during the Big Bang, when rapidly evolving physical ...
General Physics
Jan 5, 2010
8
0
(PhysOrg.com) -- Scientists studying space travel possibilities have proposed that gravitational space corridors could be used by spacecraft, in much the same way as ships use ocean currents. Taking advantage of gravitational ...
When light goes through a material, it often behaves in unpredictable ways. This phenomenon is the subject of an entire field of study called "nonlinear optics," which is now integral to technological and scientific advances ...
Optics & Photonics
Jan 11, 2024
0
88
A pair of theoretical physicists are reporting that the same observations inspiring the hunt for a ninth planet might instead be evidence within the solar system of a modified law of gravity originally developed to understand ...
Astronomy
Oct 5, 2023
11
1256
In the desert, the sand surface can become extremely hot during the day, up to 70ºC. In order to escape these temperatures, some desert lizards adopt a fascinating strategy: They dive a few centimeters under the sand surface ...
Condensed Matter
Jun 15, 2017
0
155
The distribution of normal matter precisely determines gravitational acceleration in all common types of galaxies, a team led by Case Western Reserve University researchers reports.
Astronomy
Feb 16, 2017
41
1228
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
