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An aurora profile

An aurora profile

An aurora profile—Green aurora extends upward from the Earth’s airglow layer in the photograph above. When red aurora is present, it usually extends above the green aurora. This image was taken with a 58 mm lens on February 2, 2003.

Image Credits: Image Science and Analysis Laboratory, NASA-Johnson Space Center. 16 Nov. 2004. “Earth from Space.” (8 Nov. 2006).