Almost a quarter of the universe stands literally in the shadows. According to cosmologists' theories, 25.8% of it is made up of dark matter, whose presence is signaled essentially only by its gravitational pull. What this ...
General Physics
Aug 21, 2019
67
2059
Physicists at the University of Sussex have discovered that black holes exert a pressure on their environment, in a scientific first.
Astronomy
Sep 10, 2021
12
10126
There's something a little off about our theory of the universe. Almost everything fits, but there's a fly in the cosmic ointment, a particle of sand in the infinite sandwich. Some scientists think the culprit might be gravity—and ...
Astronomy
Dec 28, 2020
107
1917
Three years ago, the first ever image of a black hole stunned the world. A black pit of nothingness enclosed by a fiery ring of light. That iconic image of the black hole at the center of galaxy Messier 87 came into focus ...
Astronomy
May 9, 2022
3
1835
Gravitational waves, first detected in 2016, offer a new window on the universe, with the potential to tell us about everything from the time following the Big Bang to more recent events in galaxy centers.
Astronomy
May 9, 2019
84
2702
Russian scientists have discovered that the proportion of unstable particles in the composition of dark matter in the days immediately following the Big Bang was no more than 2 percent to 5 percent. Their study has been published ...
Astronomy
Dec 28, 2016
91
2101
Astronomers have tested a method for reconstructing the state of the early universe by applying it to 4000 simulated universes using the ATERUI II supercomputer at the National Astronomical Observatory of Japan (NAOJ). They ...
Astronomy
Feb 16, 2021
31
2857
Particles smaller than an atom hurtle through the universe nearly at the speed of light, blasted into space from something, somewhere, in the cosmos.
Astronomy
Oct 16, 2020
40
423
The universe can be a very sticky place, but just how sticky is a matter of debate.
General Physics
Jun 30, 2015
91
11471
A RUDN employee and Brazilian colleagues have called into question the concept of using stable wormholes as portals to different points of space-time. The results of the studies were published in Physical Review D.
General Physics
Dec 14, 2018
15
785
