Have you ever made a mistake that you wish you could undo? Correcting past mistakes is one of the reasons we find the concept of time travel so fascinating. As often portrayed in science fiction, with a time machine, nothing ...
General Physics
Apr 25, 2022
36
943
Does time exist? The answer to this question may seem obvious: of course it does! Just look at a calendar or a clock.
General Physics
Apr 14, 2022
393
3900
First predicted in Einstein's theory of general relativity, gravitational waves are tiny ripples in spacetime generated by titanic and powerful cosmic events. The great physicist believed that no equipment would ever be sensitive ...
General Physics
Mar 22, 2022
1
1418
Wildfires fueled by dry, windy conditions have destroyed dozens of homes in Texas and threatened hundreds of others there and in Oklahoma and Florida this March. They're a sharp reminder to be prepared for what forecasters ...
Environment
Mar 21, 2022
0
3
Researchers may have solved Professor Stephen Hawking's famous black hole paradox—a mystery that has puzzled scientists for almost half a century.
General Physics
Mar 18, 2022
22
2938
A RIKEN physicist and two colleagues have found that a wormhole—a bridge connecting distant regions of the Universe—helps to shed light on the mystery of what happens to information about matter consumed by black holes.
Quantum Physics
Mar 8, 2022
19
800
A huge amount of mysterious dark energy is necessary to explain cosmological phenomena, such as the accelerated expansion of the Universe, using Einstein's theory. But what if dark energy was just an illusion and general ...
General Physics
Mar 3, 2022
61
2089
Einstein's theory of general relativity holds that a massive body like Earth curves space-time, causing time to slow as you approach the object—so a person on top of a mountain ages a tiny bit faster than someone at sea ...
General Physics
Feb 19, 2022
234
484
JILA physicists have measured Albert Einstein's theory of general relativity, or more specifically, the effect called time dilation, at the smallest scale ever, showing that two tiny atomic clocks, separated by just a millimeter ...
General Physics
Feb 16, 2022
53
2317
Researchers from the Institute of High Energy Physics of the Chinese Academy of Sciences examined the validity of the theory of relativity with the highest accuracy in a study entitled "Exploring Lorentz Invariance Violation ...
General Physics
Feb 15, 2022
6
1558
