Astronomy Picture of the Day · July 18, 2002

Sunspot Region 30

The Astronomy Picture of the Day for July 18, 2002 is “Sunspot Region 30,” an image. It is credited to Credit: MDI , SOHO , ESA , NASA. The original explanation runs about 128 words.

From the explanation

“The solar active region designated number 10030 (or simply region 30) is now appearing on the visible hemisphere of the closest star . Dwarfed by the Sun’s disk, the group of sunspots which make up region 30 actually cover an enormous area — nearly 10 times the size of Earth.”

— APOD editors, July 18, 2002

Read the full explanation on science.nasa.gov

At a glance

Date: July 18, 2002
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 128 words

All of July 2002 → · 2002 by month → · Full archive since 1995 →

Topics in this entry

The Sun

Topics are matched from words in the title and explanation.

On this day: July 18 in other years

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Source

Astronomy Picture of the Day, July 18, 2002 — science.nasa.gov/image-article/apod-2002-july-18-sunspot-region-30

Copy taken Oct 28, 2026, 2:39 AM EDT. The image and explanation belong to their creators. OpenOrbit is not affiliated with or endorsed by NASA.