Astronomy Picture of the Day ·
Solar Cycle 25 Has Begun
The Astronomy Picture of the Day for September 17, 2020 is “Solar Cycle 25 Has Begun,” an image. It is credited to Image Credit: NASA , SDO. The original explanation runs about 154 words.
From the explanation
“The general trend of monthly sunspot data now confirms that the minimum of the approximately 11 year cycle of solar activity occurred in December 2019, marking the start of Solar Cycle 25 . That quiet Sun, at minimum activity, appears on the right of this split hemispherical view.”
— APOD editors, September 17, 2020
Read the full explanation on science.nasa.gov
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At a glance
- Date
- September 17, 2020
- Type
- Image
- Credit
- Credit: Image Credit: NASA , SDO
- Copyright
- No copyright notice on the entry. Check the credited institution’s own usage rules before reusing it.
- Explanation length
- About 154 words