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Astronomy Picture of the Day

Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.

See Explanation. Clicking on the picture will download the highest resolution version available.

Auroras over Northern Canada

Explanation: Gusting solar winds and blasts of charged particles from the Sun resulted in several rewarding nights last December for those anticipating auroras . The above image captured dramatic auroras stretching across a sky near the town of Yellowknife in northern Canada . The auroras were so bright that they not only inspired awe , but were easily visible on an image exposure of only 1.3 seconds. A video taken concurrently shows the dancing sky lights evolving in real time as tourists, many there just to see auroras , respond with cheers. The conical dwellings on the image right are teepee s, while far in the background, near the image center, is the constellation of Orion .

Astrophysicists: Browse 850+ codes in the Astrophysics Source Code Library

Date July 14, 2014
Credit Image Credit & Copyright: Kwon, O Chul ( TWAN )
Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)
A service of: ASD at NASA / GSFC,
NASA Science Activation & Michigan Tech. U.