The auroras are the result of a complex interaction between the solar wind and the Earth’s magnetic field. Here’s what happens. The sun’s heat charges the particles in the solar wind, a stream of electrically
Unlike other phenomena of the night sky.such as meteors and comets, the auroras are atmospheric phenomena, but what causes them?Although auroras appear in the atmosphere,they are the result of extraterrestrial(外星的)forees: however, these forces are not particularly strange. The Sun's corona- ...
Besides the pulsed reconnection mechanism which explains the PMAFs in terms of newly merged magnetic field tube, there are two other possible mechanisms. One of those is based on the presence of a gap between the central plasma sheet and the LLBL / magnetopause. This means that the dayside ...
"During our summer months, the sky in the north of Scotland never gets dark enough for auroras," says Tough. "However, as compensation, we get to see these spectacular, ethereal, electric-blue NLCs." NLCs are Earth’s highest clouds. Floating at the edge of space about 83 km above the...
Discrete aurora, on the other hand, result from the precipitation into the atmosphere of electrons which have been energized as they moved toward the ionosphere by electric fields aligned parallel to the magnetic field. The “field-aligned” electric fields responsible for this energization are ...
Not all auroras slither through the sky like snakes. Some - called diffuse aurora - are more like an even glow dispersed throughout the sky. May 26, 2021 - Scientists know a fair bit about these diffuse auroras, but an old video from 2002 revealing what seems to be an undocumented aurora...
How do auroras form in the ionosphere? How does Earth's magnetosphere work? How did the magnetosphere form? What does the magnetosphere attract? How was Earth's magnetosphere discovered? What is the magnetosphere made of? Does the magnetosphere decrease auroras? What are the processes in the ...
Moreover, at higher altitudes, such as when passengers are flying on an airplane, the thinner atmosphere results in more intense exposure to cosmic radiation.(第三段最后两句) 译文:因此,生活在高纬度地区(如黑龙江省)的人比生活在低 纬度地区(如海南省)的人经受的宇宙辐射略多。 此外,在高 海拔地区...
visibility may extend down to central Ontario. G1 auroras stay farther to the north, but can be seen through the central Prairies. These forecasts are for 3-hour blocks of time, though, and the aurora strength and southerly extent can vary quite a bit during one of ...
Space weather scientists have found that the density, speed,andenergy of a coronal mass ejection each factor into what kind of auroras it can spark as it sweeps past our planet. The density of this CME appears to be relatively low, meaning there are fewer solar p...