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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.

A Twisted Solar Eruptive Prominence

Explanation: A huge eruptive prominence is seen moving out from our Sun in this condensed half-hour time-lapse sequence. Ten Earths could easily fit in the “claw” of this seemingly solar monster. This large prominence , though, is significant not only for its size, but its shape. The twisted figure eight shape indicates that a complex magnetic field threads through the emerging solar particles . Recent evidence of differential rotation inside the Sun might help account for the surface explosion. The sequence was taken early this year by the Sun-orbiting SOHO satellite . Although large prominence s and energetic Coronal Mass Ejection s (CMEs) are relatively rare, they are occurring more frequently now that we are near the Solar Maximum , a time of peak sunspot and solar activity in the eleven-year solar cycle .

Date April 3, 2000
Credit Credit: SOHO Consortium , EIT , ESA , NASA
Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)
A service of: ASD at NASA / GSFC,
NASA Science Activation & Michigan Tech. U.