Kōrero: Atmosphere

Neon light

Neon light

Auroras occur when electrons from the sun in the earth's magnetosphere are energised by a fast-flowing solar wind. They are guided and accelerated towards the polar regions, where they enter the atmosphere. Electrons collide with oxygen and nitrogen gases in the atmosphere, causing these gases to emit light – similar to the process that makes neon lights glow.

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Photograph by Alastair McLean

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Me pēnei te tohu i te whārangi:

Bill Allan, Katja Riedel, Richard McKenzie, Sylvia Nichol and Tom Clarkson, 'Atmosphere - Auroras', Te Ara - the Encyclopedia of New Zealand, http://www.TeAra.govt.nz/mi/photograph/6138/neon-light (accessed 19 August 2019)

Story by Bill Allan, Katja Riedel, Richard McKenzie, Sylvia Nichol and Tom Clarkson, published 12 Jun 2006