Astronomy Picture of the Day · September 23, 2010

Equinox and the Iron Sun

The Astronomy Picture of the Day for September 23, 2010 is “Equinox and the Iron Sun,” an image. It is credited to Credit: NASA / Goddard / SDO AIA Team. The original explanation runs about 134 words.

From the explanation

“Today, the Sun crosses the celestial equator heading south at 03:09 Universal Time . Known as an equinox, this astronomical event marks the first day of autumn in the northern hemisphere and spring in the south.”

— APOD editors, September 23, 2010

Read the full explanation on science.nasa.gov

At a glance

Date: September 23, 2010
Type: Image
Credit: Credit: NASA / Goddard / SDO AIA Team
Copyright: No copyright notice on the entry. Check the credited institution’s own usage rules before reusing it.
Explanation length: About 134 words

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Topics in this entry

The Sun

Topics are matched from words in the title and explanation.

On this day: September 23 in other years

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Source

Astronomy Picture of the Day, September 23, 2010 — science.nasa.gov/image-article/apod-2010-september-23-equinox-and-the-iron-sun

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.