Astronomy Picture of the Day ·
Large Sunspot Group AR 9393
The Astronomy Picture of the Day for April 11, 2001 is “Large Sunspot Group AR 9393,” an image. It is credited to Credit: MDI , SOHO , ESA , NASA. The original explanation runs about 215 words.
From the explanation
“The largest sunspot group of the past ten years crossed the surface of the Sun late last month and early this month. The group was designated Active Region 9393 as it was the 9393rd region identified since counting officially began in 1973.”
— APOD editors, April 11, 2001
Read the full explanation on science.nasa.gov
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At a glance
- Date
- April 11, 2001
- Type
- Image
- Credit
- Credit: MDI , SOHO , ESA , NASA
- Copyright
- No copyright notice on the entry. Check the credited institution’s own usage rules before reusing it.
- Explanation length
- About 215 words