ISS003-ESC-6152.jpg
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Summary
Description ISS003-ESC-6152.jpg |
English:
Aurora borealis photographed from board of the ISS, 203 nautical miles (376 km) over nadir point of 50.6 N, -43.7 W. "As geomagnetic storms cause beautiful displays of aurora across the United States (related story on CNN), astronauts onboard the International Space Station also have the opportunity to take a look. Green colors of the aurora are dominant in this image captured by a digital still camera on October 4, 2001. Auroras are caused when high-energy electrons pour down from the Earth’s magnetosphere and collide with atoms. Green aurora occurs from about 100 km to 250 km altitude and is caused by the emission of 5577 Angstrom wavelength light from oxygen atoms. The light is emitted when the atoms return to their original unexcited state."
|
Date | |
Source | http://earthobservatory.nasa.gov/IOTD/view.php?id=1920 - NASA image number ISS003E6152 |
Author | NASA astronaut aboard the International Space Station |
Licensing
Public domain Public domain false false |
This file is in the
public domain
in the United States because it was created by the Image Science & Analysis Laboratory, of the
NASA
Johnson Space Center. NASA copyright policy states that "NASA material is not protected by copyright
unless noted
". (
NASA media use guidelines
or
Conditions of Use of Astronaut Photographs
).
Photo source:
ISS003-E-6152
.
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