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The Northern Lights Explained | Do you want to know more about northern lights in Norway?

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this is where the story of the Aurora

starts on the Sun a star of average size

among billions of other stars in our

Milky Way using satellites we can image

the sun's dynamic atmosphere called the

chromosphere here we see bright intense

regions and how violently the Sun

behaves every second every day in some

cases large amounts of gas are also

hurled out into space we call these

eruptions coronal mass ejections or CMEs

for short they thrust billions of tons

of particles at speeds up to eight

million kilometers per hour

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during solar maximum solar storms can

occur several times per day and

sometimes they are aimed in the Earth's

direction when the solar storm reaches

earth something strange happens it's as

if it is deflected by an invisible

shield the Earth's magnetic field the

magnetosphere the magnetic fields

coupled together and create a funnel for

the gas streams down on the daylight

side of the pole this is the daytime

aurora which our eyes cannot see the

magnetic fields stretch further rear

woods and couple together the magnetic

field stretched like a rubber band break

and gas from the solar storm streams

back along the magnetic lines towards

the polar regions on the night side this

is nighttime or rora we can see

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here is a more detailed view of the

particles while they are traveling along

the magnetic fields eventually they

collide with atoms in the Earth's

atmosphere these collisions usually take

place between 80 to 300 kilometers above

ground here they cause oxygen and

nitrogen to become excited and to emit

light in much the same way as in

fluorescent lights or in advertising

neon signs

the result is a dazzling dance of green

blue white and red light in the sky

forming in a ring shaped area called the

Aurora oval

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