File:Aurora_australis_ISS.jpg
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Aurora_australis_ISS.jpg (720 × 480 pixels, file size: 269 KB, MIME type: image/jpeg)
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DescriptionAurora australis ISS.jpg |
English: An astronaut took this photograph of the Aurora Australis in August 2017. At the time, the International Space Station was moving over the southern Indian Ocean towards the Great Australian Bight and Melbourne, Australia. Click here to see a video of the flight over the aurora.
Auroras are created in the upper atmosphere when the solar wind (a stream of charged particles emitted by the Sun) interacts with the Earth’s protective magnetic field. Charged particles within the magnetosphere are accelerated down field lines toward the ionosphere, where they collide with different gases (particularly oxygen and nitrogen) and emit light as a reaction. Auroras often appear as neon green, purple, yellow, or red, depending on the gas molecules being excited. Green, for example, indicates collisions with oxygen. Astronaut photograph ISS052-E-63378 was acquired on August 19, 2017 |
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Date | acquired August 19, 2017 | ||||||
Source | https://earthobservatory.nasa.gov/IOTD/view.php?id=91062 | ||||||
Author | NAsa Astronaut photograph from ISS | ||||||
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 13:31, 4 October 2017 | 720 × 480 (269 KB) | Tillman | {{Information |Description ={{en|1=An astronaut took this photograph of the Aurora Australis in August 2017. At the time, the International Space Station was moving over the southern Indian Ocean towards the Great Australian Bight and Melbourne, Aus... |
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Unique ID of original document | xmp.did:a57a38c8-a38b-8640-b031-88c14eb83978 |
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Software used | Adobe Photoshop CC 2017 (Windows) |