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  • Tag Archives Aurora Borealis
  • When to see the northern lights (Aurora Borealis)

    When to see the northern lights

    Seeing the northern lights, or the aurora borealis, as they are also known, is a jaw-dropping and mystical moment.

    The lights are at their most frequent in late autumn and winter/early spring.

    Between the autumn equinox and spring equinox (21 September – 21 March), it is dark between 6 pm and 1 am, and you have maximum chances of spotting the lights. However, the weather is also of importance, and September, October and November tend to be wet and snowless in the north.

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  • The Aurora Borealis

    Auroras result from emissions of photons in the Earth’s upper atmosphere, above 80 km (50 miles), from ionized nitrogen  atoms regaining an electron, and oxygen and nitrogen  atoms returning from an excited state to ground state. They are ionized or excited  by the collision of solar wind and magnetospheric  particles being funneled down and accelerated along the Earth’s magnetic field lines; excitation energy is lost by the emission of a photon of light, or by collision with another atom or molecule:

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