No one has a firm grasp on the dimensions and activity of the lowest part of our upper atmosphere, known as the ionospheric D region, because it's literally a moving target. Located 40 to 60 miles above the Earth's surface, ...
Earth Sciences
Apr 5, 2019
0
160
A chameleon can flexibly change its colour to match its surroundings. And a similar phenomenon can now be seen in a new class of smart materials called metamaterials. The trouble is that these metamaterials lack the ability ...
Optics & Photonics
Apr 2, 2019
0
6
An exciting new competition is giving citizens of planet Earth the opportunity to get their voices to Mars in the next phase of the ExoMars programme. The ExoMars rover and platform will launch to the Red Planet in 2020.
Space Exploration
Mar 28, 2019
0
21
The field of metamaterials involves designing complicated, composite structures, some of which can manipulate electromagnetic waves in ways that are impossible in naturally occurring materials.
General Physics
Mar 21, 2019
4
1425
A UK-German team of astronomers has conducted observations of a peculiar radio magnetar known as XTE J1810–197, which turned on in December 2018 after an almost decade-long period of quiescence. Results of these observations ...
Researchers at the University of Michigan and City University of New York have recently proposed and experimentally validated a transparent, electronically tunable metasurface. This metasurface, presented in a paper published ...
Scientists have discovered tadpole-shaped jets coming out of regions with intense magnetic fields on the Sun. Unlike those living on Earth, these "tadpoles"—formally called pseudo-shocks—are made entirely of plasma, the ...
Space Exploration
Feb 19, 2019
2
224
Electrons flowing across the boundary between two materials are the foundation of many key technologies, from flash memories to batteries and solar cells. Now researchers have directly observed and clocked these tiny cross-border ...
General Physics
Feb 11, 2019
0
722
Researchers have investigated wave-particle interactions between energetic electrons and chorus waves evolving in the space surrounding the Earth using the scientific satellite Arase and, simultaneously, transient auroral ...
General Physics
Feb 5, 2019
0
133
In work that provides insights for several areas of wave physics, including Maxwell electromagnetism, topological quantum states, and plasmonics/metamaterials, scientists have shown that the well-known surface electromagnetic ...
General Physics
Feb 4, 2019
0
1136
