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2 votes
1 answer
75 views

How can auroras be visible at lower latitudes when a strong solar wind hits Earth?

Auroras are a product of electrically charged particles hitting Earth's atmosphere at the poles, where the geomagnetic field is weaker (where magnetic lines originate). How can a strong solar wind ...
jack_O'Dim's user avatar
14 votes
4 answers
2k views

Why is aurora borealis circular in shape when viewed from space?

These are some false color images of the northern lights captured by NASA's satellite Dynamics Explorer-1. Image credits: Dynamics Explorer - 1 (DE-1) Spin-Scan Auroral Imaging (SAI) Photo Gallery It'...
AlphaLife's user avatar
  • 12.6k
0 votes
1 answer
131 views

How does the aurora brightness depend on the distance from the poles?

I checked a few sites about aurora: http://www.aurora-service.eu/aurora-school/all-about-the-kp-index/ https://www.swpc.noaa.gov/products/aurora-30-minute-forecast https://www.swpc.noaa.gov/products/3-...
inf3rno's user avatar
  • 1,079
6 votes
1 answer
867 views

What causes the vertical bands of light in an aurora?

I was lucky enough to witness a medium-strength aurora recently in Iceland (KP ~3). We saw the classic rippling arc of green light, which at times seemed to consist of smaller flickering vertical ...
freddieaj's user avatar
6 votes
2 answers
2k views

How does the Earth's magnetic field protect it from the solar wind?

Several sources (see linked questions at the end) say that earth's magnetic field shields us from the solar wind. The general consensus is that without earth's magnetic field, the atmosphere would be ...
F Chopin's user avatar
  • 173
3 votes
1 answer
491 views

Distortion of the Earth's magnetic field due to solar winds?

Why and how do the solar winds distort the Earth's Magnetosphere to form a drop like shape facing away from the Sun?
Atharva Bagul's user avatar
6 votes
2 answers
2k views

How would the Aurora light on Earth look like if there wasn't a magnetic field?

Here are some pictures of the aurora light. The beautiful phenomenon of Aurora is a well-known one, seen in the northern (Aurora Borealis) and southern parts (Aurora Australis) of the globe. Here is ...
Deschele Schilder's user avatar
2 votes
0 answers
174 views

Aurora borealis forecasting, some technical details

I have an idea to make a software tool (with some really user friendly interface) for predicting auroras on any place on Earth. I do know some physics behind the phenomenon, but only basics, like it ...
mexus's user avatar
  • 121