Astronomy Picture of the Day · September 23, 1997

A Martian Autumn Begins

The Astronomy Picture of the Day for September 23, 1997 is “A Martian Autumn Begins,” an image. It is credited to Credit: Phil James (Univ. Toledo), Steve Lee (Univ. Colorado), NASA. The original explanation runs about 146 words.

From the explanation

“Today is the first day of Autumn in the Northern Hemisphere of Planet Earth. The Autumnal Equinox occured yesterday at 7:56 pm EDT as the Sun crossed the celestial equator from North to South.”

— APOD editors, September 23, 1997

Read the full explanation on science.nasa.gov

At a glance

Date: September 23, 1997
Type: Image
Credit: Credit: Phil James (Univ. Toledo), Steve Lee (Univ. Colorado), NASA
Copyright: No copyright notice on the entry. Check the credited institution’s own usage rules before reusing it.
Explanation length: About 146 words

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Topics in this entry

The Sun Mars

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, 1997 — science.nasa.gov/image-article/apod-1997-september-23-a-martian-autumn-begins

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.