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Explanation: On the International Space Station (ISS), you can only admire an aurora until the sun rises. Then the background Earth becomes too bright. Unfortunately, after sunset, the rapid orbit of the ISS around the Earth means that sunrise is usually less than 47 minutes away. In the featured image, a green aurora is visible below the ISS -- and on the horizon to the upper right, while sunrise approaches ominously from the upper left. Watching an aurora from space can be mesmerizing as its changing shape has been compared to a giant green amoeba. Auroras are composed of energetic electrons and protons from the Sun that impact the Earth's magnetic field and then spiral down toward the Earth so fast that they cause atmospheric atoms and molecules to glow. The ISS orbits at nearly the same height as auroras, many times flying right through an aurora's thin upper layers, an event that neither harms astronauts nor changes the shape of the aurora.
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NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.
Based on Astronomy Picture
Of the Day
Publications with keywords: aurora - international space station
Publications with words: aurora - international space station
See also:
- APOD: 2025 January 7 Á A New Years Aurora and SAR Arc
- APOD: 2024 December 8 Á Aurora around Saturns North Pole
- APOD: 2024 October 16 Á Colorful Aurora over New Zealand
- APOD: 2024 October 13 Á Aurora Timelapse Over Italian Alps
- Northern Lights, West Virginia
- Aurora Australis and the International Space Station
- APOD: 2024 June 26 Á Timelapse: Aurora, SAR, and the Milky Way