The radiation belts of Earth and Saturn differ more strongly than previously assumed. In these belts, very energetic particles, such as electrons and protons, move around the planet at high velocities - captured by its magnetic ...
Space Exploration
Oct 30, 2017
0
517
Charged particles may be small, but they matter to astronauts. NASA's Human Research Program (HRP) is investigating these particles to solve one of its biggest challenges for a human journey to Mars: space radiation and its ...
Space Exploration
Sep 22, 2017
1
27
Most satellites, not designed to withstand high levels of particle radiation, wouldn't last a day in the Van Allen Radiation belts. Trapped by Earth's magnetic field into two giant belts around the planet, high-energy particles ...
Space Exploration
Sep 4, 2017
0
25
Atmospheric aerosols are tiny particles that scatter and absorb sunlight but also influence climate indirectly through their role in cloud formation. One of the largest sources of aerosols is sea spray which is produced over ...
Earth Sciences
Jul 3, 2017
1
8
In the first moments after the Big Bang, the universe expanded many billions of times faster than today. Such rapid expansion is likely due to a primordial force field acting with a new particle, the inflaton. From the latest ...
General Physics
Jun 9, 2017
21
157
When spacecraft and satellites travel through space they encounter tiny, fast moving particles of space dust and debris. If the particle travels fast enough, its impact appears to create electromagnetic radiation (in the ...
Plasma Physics
May 2, 2017
3
1503
National security: The phrase resonates like a drumbeat these days.
Nanomaterials
Apr 12, 2017
0
18
One of the main health concerns of living and working in space is the long-term exposure to high levels of radiation. NASA scientists have developed a new device to monitor radiation exposure to neutrons and are testing it ...
Space Exploration
Apr 5, 2017
0
39
NASA scientists studying high-altitude radiation recently published new results on the effects of cosmic radiation in our atmosphere. Their research will help improve real-time radiation monitoring for aviation industry crew ...
Space Exploration
Jan 27, 2017
0
471
Ultrashort bursts of electrons have several important applications in scientific imaging, but producing them has typically required a costly, power-hungry apparatus about the size of a car.
Optics & Photonics
Nov 22, 2016
1
1549
