Astronomy Picture of the Day · August 31, 1997

Arp 230: Two Spirals in One?

The Astronomy Picture of the Day for August 31, 1997 is “Arp 230: Two Spirals in One?,” an image. It is credited to Credit: J. A. Westphal (Caltech), STScI, NASA. The original explanation runs about 73 words.

From the explanation

“Is this one galaxy or two? Analysis of Arp 230 has shown evidence that this seemingly single spiral galaxy is actually the result of the recent collision of two spiral galaxies.”

— APOD editors, August 31, 1997

Read the full explanation on science.nasa.gov

At a glance

Date: August 31, 1997
Type: Image
Credit: Credit: J. A. Westphal (Caltech), STScI, NASA
Copyright: No copyright notice on the entry. Check the credited institution’s own usage rules before reusing it.
Explanation length: About 73 words

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Topics in this entry

Galaxies

Topics are matched from words in the title and explanation.

On this day: August 31 in other years

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Source

Astronomy Picture of the Day, August 31, 1997 — science.nasa.gov/image-article/apod-1997-august-31-arp-230-two-spirals-in-one

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.