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Picture of the day archives
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2019 January
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2019 January 29
2019 January 31
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Picture of the day
A video of the
aurora australis
, as seen from the
International Space Station
. Aurorae are natural light displays in the sky caused by the collision of energetic charged particles with atoms in the high altitude
thermosphere
. The particles originate in the
magnetosphere
and
solar wind
and, on Earth, are directed by
Earth's magnetic field
into the atmosphere.
Photo: NASA/ISS
Expedition 28
crew
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