40.2 MB (2.6 MB compressed)
3122 x 4500 pixels
26.4 x 38.1 cm ⏐ 10.4 x 15.0 in (300dpi)
ALAN SIRULNIKOFF / SCIENCE PHOTO LIBRARY ALAN SIRULNIKOFF / SCIENCE PHOTO LIBRARY
Aurora borealis or northern lights display over silhouetted trees. Aurorae are caused by energetic charged particles from the Sun colliding with gas molecules in the upper atmosphere near the poles. Photographed near Atlin in British Columbia, Canada.
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