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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.

The Sun is shown during a total solar eclipse. Accentuated is the expansive corona of the Sun, which is shown streaming out in all directions. Please see the explanation for more detailed information.

Detailed View of a Solar Eclipse Corona

Explanation: Only in the fleeting darkness of a total solar eclipse is the light of the solar corona easily visible. Normally overwhelmed by the bright solar disk, the expansive corona , the sun's outer atmosphere , is an alluring sight. But the subtle details and extreme ranges in the corona's brightness, although discernible to the eye, are notoriously difficult to photograph. Pictured here , however, using multiple images and digital processing, is a detailed image of the Sun's corona taken during the April 20, 2023 total solar eclipse from Exmouth , Australia. Clearly visible are intricate layers and glowing caustics of an ever changing mixture of hot gas and magnetic fields . Bright looping prominences appear pink just around the Sun's limb . A similar solar corona might be visible through clear skies in a narrow swath across the North America during the total solar eclipse that occurs just six days from today

NASA Coverage: Total Solar Eclipse of 2024 April 8

Date April 2, 2024
Credit Image Credit & Copyright: Phil Hart
Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)
A service of: ASD at NASA / GSFC,
NASA Science Activation & Michigan Tech. U.