According to a new NASA laboratory experiment, rovers may have to dig about 6.6 feet (two meters) or more under the Martian surface to find signs of ancient life because ionizing radiation from space degrades small molecules ...
Astrobiology
Jun 27, 2022
5
262
Research from North Carolina State University shows that lightweight composite metal foams are effective at blocking X-rays, gamma rays and neutron radiation, and are capable of absorbing the energy of high impact collisions. ...
Materials Science
Jul 17, 2015
1
184
Astronomers have succeeded for the first time in quantifying the proton and electron components of cosmic rays in a supernova remnant. At least 70% of the very-high-energy gamma rays emitted from cosmic rays are due to relativistic ...
Astronomy
Aug 23, 2021
21
351
Some of the most massive and distant black holes in the universe emit an enormous amount of extraordinarily energetic radiation called gamma rays. This type of radiation occurs, for example, when mass is converted into energy ...
Astronomy
Jul 2, 2020
63
168
Researchers at IMS and their coworkers have shown theoretically and experimentally that a high energy electron in circular/spiral motion radiates vortex photons from the radio wavelength to gamma rays. This greatly broadens ...
Optics & Photonics
Jul 21, 2017
4
89
In a first-of-its-kind study, a research team, including Northwestern University's Brian Hoffman and Ajay Sharma, found that ancient bacteria could survive close to the surface on Mars much longer than previously assumed. ...
Astrobiology
Oct 25, 2022
2
883
In 2020, astronomers discovered a large hourglass-shaped structure in or near the center of our Milky Way galaxy. Dubbed "eROSITA bubbles," there have been a few different hypotheses proposed to explain their precise nature. ...
Scientists now know that thunderstorms, working as powerful natural terrestrial particle accelerators, produce intense flashes of ionizing radiation called "dark lightning." To further their understanding of this phenomena, ...
Earth Sciences
Jun 13, 2013
2
0
(Phys.org)—Grade-school science teachers sometimes hand out "mystery boxes" containing ramps, barriers and a loose marble. By rotating the boxes and feeling the marble hang up or drop, the students try to deduce what's ...
Astronomy
Dec 27, 2012
22
0
An international team of astrophysicists under Dutch leadership has demonstrated with an improved model that colliding neutron stars can emit gamma rays. Old models did not predict this and faltered since the merging of two ...
Astronomy
Oct 21, 2020
8
476
