Astronomy Picture of the Day · September 21, 1999

The Quintuplet Star Cluster

The Astronomy Picture of the Day for September 21, 1999 is “The Quintuplet Star Cluster,” an image. It is credited to Credit: Don Figer (STScI) et al., NASA. The original explanation runs about 150 words.

From the explanation

“Bright clusters of stars form and disperse near the center of our Galaxy . Four million years ago the Quintuplet Cluster, pictured above , formed and is now slowly dispersing.”

— APOD editors, September 21, 1999

Read the full explanation on science.nasa.gov

At a glance

Date: September 21, 1999
Type: Image
Credit: Credit: Don Figer (STScI) et al., NASA
Copyright: No copyright notice on the entry. Check the credited institution’s own usage rules before reusing it.
Explanation length: About 150 words

All of September 1999 → · 1999 by month → · Full archive since 1995 →

Topics in this entry

Galaxies Star clusters

Topics are matched from words in the title and explanation.

On this day: September 21 in other years

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Source

Astronomy Picture of the Day, September 21, 1999 — science.nasa.gov/image-article/apod-1999-september-21-the-quintuplet-star-cluster

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.