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 his
picture was adapted from a most remarkable photograph of the Aurora Borealis
{Definition} produced in the early seventies
by a special instrument.
aurora (14th Century) 1: dawn 2 capitalized: the Roman goddess of dawn 3: a luminous phenomenon that consists of streamers or arches of light appearing in the upper atmosphere of a planet's magnetic polar regions and is caused by the emission of light from atoms excited by electrons accelerated along the planet's magnetic field lines aurora borealis noun [New Latin, northern dawn] (1717): an aurora that occurs in earth's northern hemisphere--called also 'northern lights'; aurora australis [New Latin, southern dawn] (1741): an aurora that occurs in earth's southern hemisphere--called also 'southern lights.' -- Excerpted from Merriam-Webster's Collegiate Dictionary.
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