Scientists have been able to observe the universe and determine that about 80% of the its mass appears to be "dark matter," which exerts a gravitational pull but does not interact with light, and thus can't be seen with telescopes. ...
General Physics
May 1, 2020
70
1336
Most ordinary matter is held together by an invisible subatomic glue known as the strong nuclear force—one of the four fundamental forces in nature, along with gravity, electromagnetism, and the weak force. The strong nuclear ...
General Physics
Feb 26, 2020
31
1957
An international team of researchers has used sophisticated models to calculate the mass of the Milky Way. They have written a paper describing their efforts and results, and have posted it on the arXiv preprint server.
A team of researchers from Nanjing University, working with two colleagues from the University of Science and Technology of China, has conducted new tests of the chameleon theory and report a failure to find any evidence ...
Solar cells can now be made so thin, light and flexible that they can rest on a soap bubble. The new cells, which efficiently capture energy from light, could offer an alternative way to power novel electronic devices, such ...
Materials Science
Aug 27, 2020
1
255
Scientists from Regensburg and Zurich have found a fascinating way to push an atom with controlled forces so quickly that they can choreograph the motion of a single molecule within less than a trillionth of a second. The ...
Quantum Physics
Sep 2, 2020
5
1707
On February 19, 2019, the U.S. Space Force (USSF) was officially created with the signing of Space Policy Directive–4. This effectively broke it off from the U.S. Air Force Space Command (AFSC) and made it into the sixth ...
Space Exploration
May 22, 2020
4
891
It appears we have missed another close call between two satellites—but how close did we really come to a catastrophic event in space?
Space Exploration
Jan 30, 2020
6
134
As part of a new NASA Quantum Pathways Institute consisting of a multi-university research team, UC Santa Barbara professor of electrical and computer engineering Daniel Blumenthal will help to build technology and tools ...
Quantum Physics
Mar 16, 2023
0
96
When it comes to a marriage with quantum theory, gravity is the lone holdout among the four fundamental forces in nature. The three others—the electromagnetic force, the weak force, which is responsible for radioactive ...
Quantum Physics
Sep 7, 2021
2
700
