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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.

Solar Magnetic Bananas

Explanation: Is that our Sun ? The unusual banana -shaped loops shown above are actually part of a computer-generated snap-shot of our Sun's magnetic field . This animated frame was constructed using data from the ground-based U.S. Solar Vector Magnetograph and the space-based Japanese X-Ray Telescope Yohkoh . Surfaces of constant magnetic field strength loop through the Sun's corona , break through the Sun's surface, and connect regions of magnetic activity such as sunspots . Recently, contact has been interrupted with the Sun-watching SOHO satellite. Although SOHO had completed its two year mission, attempts are still being made to re-establish communication.

Date June 29, 1998
Credit Credit: A. Gary et al. (NASA/MSFC), NASA
Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)
A service of: ASD at NASA / GSFC,
NASA Science Activation & Michigan Tech. U.