Auroras occur when charged particles from the sun collide with gases in Earth's upper atmosphere. These ghostly glows are most visible near the magnetic poles. But thanks to increasing solar activity, they're no
Then, in the 1800s, scientific interest in Earth’s magnetic field—in strange variations in Earth’s magnetic field—led to the observation that the biggest magnetic disturbances coincided with dramatic auroras, and also with the timing of the most intense sunspot activity. 然后在 1800 年代,对...
The following sections will explore how atmospheric composition and the altitude at which solar particles collide with these gases play a crucial role in determining the colors of auroras. You can also find out when you are most likely to see the northern lights with our aurora forecast, updated...
When this radiation and these particles reach the Earth's magnetic field, they interact with it at the poles to produce the auroras (borealis and australis). Solar flares can also disrupt communications, satellites, navigation systems and even power grids. The radiation and particles ionize the at...
Is my camera good enough to capture the northern lights? Are the northern lights dangerous? Do other planets have northern lights? Can I see the lights from the centre of a city / town? Is forecasting the northern lights months in advance possible? Equinox has great auroras Here’s the ...
A. Auroras appear in several forms and colors. B. Auroras appear red in areas close to the poles. C. Weather conditions affect the size of auroras. D. The arc form is typical of Alaskan auroras. 你的答案: 正确答案:A 题目解析: 登录 后才能查看题目解析,还没有账号? 马上注册 推荐文章:...
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Like its name, the ionosphere is the ionized part of the Earth’s atmosphere and is found between 48 km (30 mi) to 965 km (600 mi) altitude. Auroras occur in the ionosphere where high-energy particles from the sun interacting with the atoms in this layer. ...
NARRATOR: Listen to part of a lecture in an astronomy class. The professor is discussing auroras. MALE PROFESSOR: OK. The aurora. The aurora refers to the rays of bright colors in the night sky near the North and South Poles—in the Northern Hemisphere it’s called the aurora borealis and...