Active galactic nuclei (AGN) are supermassive black holes at the centers of galaxies that are accreting material. These AGN emit jets of charged particles that move at speeds close to that of light, transporting huge amounts ...
Astronomy
Dec 31, 2019
1
626
This week's news roundup includes a Bronze Age discovery that calls into question existing ideas of gender representation from the period. More research confirms that bonobos are actually nice. Plus: Actual good climate news?
(PhysOrg.com) -- There's more to the cosmos than meets the eye. About 80 percent of the matter in the universe is invisible to telescopes, yet its gravitational influence is manifest in the orbital speeds of stars around ...
Astronomy
Apr 2, 2012
77
0
A combined analysis of data from NASA's Fermi Gamma-ray Space Telescope and the High Energy Stereoscopic System (H.E.S.S.), a ground-based observatory in Namibia, suggests the center of our Milky Way contains a "trap" that ...
Astronomy
Jul 18, 2017
6
531
The night sky seems serene, but telescopes tell us that the universe is filled with collisions and explosions. Distant, violent events signal their presence by spewing light and particles in all directions. When these messengers ...
Astronomy
Oct 3, 2018
11
803
The proton is a composite particle made up of fundamental building blocks of quarks and gluons. These components and their interactions determine the proton's structure, including its electrical charges and currents. This ...
General Physics
Oct 3, 2022
4
366
(PhysOrg.com) -- NASA's Swift satellite and an international team of astronomers have found a gamma-ray burst from a star that died when the universe was only 630 million years old, or less than five percent of its present ...
Astronomy
Apr 28, 2009
7
0
In the late eighth century, Earth was hit by a mystery blast of cosmic rays, according to a Japanese study that found a relic of the powerful event in cedar trees.
Earth Sciences
Jun 4, 2012
1
0
When astrophysicists look at the gamma-ray glow from a galaxy outside our own, all they typically see is a small spot because the galaxy is extremely far away. So, when a galaxy appears as an extended blob, something extraordinary ...
Astronomy
Oct 16, 2018
222
239
(Phys.org)—A trio of researchers with The University of Texas has found a possible way to create gamma ray beams by firing a laser beam at a piece of plastic. In their paper published in Physical Review Letters, David Stark, ...
