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How far are the Northern Lights from Earth?
The lights of the Aurora generally extend from 80 kilometres (50 miles) to as high as 640 kilometres (400 miles) above the earth's surface.
Can Aurora Borealis red?
On occasion the aurora gets a deep red color. This comes from higher altitudes, around 120-180 miles (200-300 km). It is again the oxygen atom that is responsible for this color. Keeping this in consideration, can the human eye see the northern lights? The majority of auroral displays are predominantly green for two reasons, the first of which is that the human eye detects green more readily than other colours. This is why photographic images of the Northern Lights will often show colours that were not visible at the time to the naked eye.
Also, why are auroras only visible at night?
Even though auroras are best seen at night, they are actually caused by the Sun. The Sun sends us more than heat and light; it sends lots of other energy and small particles our way. The protective magnetic field around Earth shields us from most of the energy and particles, and we don't even notice them. Why is the aurora borealis green? The most common color seen in the Northern Lights is green. When the solar wind hits millions of oxygen atoms in the Earth's atmosphere at the same time, it excites the oxygen atoms for a time and they decay back to their original state, when they emit the green hue we can see from the ground.
Keeping this in consideration, do the northern lights happen every night?
There is no official season since the Northern Lights are almost always present, day and night. Caused by charged particles from the sun hitting atoms in Earth's atmosphere and releasing photons, it's a process that happens constantly.
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