Astronomy Picture of the Day · July 9, 1999

NGC 7789: Galactic Star Cluster

The Astronomy Picture of the Day for July 9, 1999 is “NGC 7789: Galactic Star Cluster,” an image. It is credited to Credit: B.J. Mochejska and J. Kaluzny (Warsaw University Observatory), KPNO. The original explanation runs about 138 words.

From the explanation

“6 billion years old, this cluster of stars is beginning to show its age. NGC 7789 is an open or galactic star cluster about 8,000 light-years distant toward the constellation Cassiopeia and lies near the plane of our Milky Way galaxy.”

— APOD editors, July 9, 1999

Read the full explanation on science.nasa.gov

At a glance

Date: July 9, 1999
Type: Image
Credit: Credit: B.J. Mochejska and J. Kaluzny (Warsaw University Observatory), KPNO
Copyright: No copyright notice on the entry. Check the credited institution’s own usage rules before reusing it.
Explanation length: About 138 words

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Topics in this entry

The Milky Way Galaxies Star clusters

Topics are matched from words in the title and explanation.

On this day: July 9 in other years

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Source

Astronomy Picture of the Day, July 9, 1999 — science.nasa.gov/image-article/apod-1999-july-09-ngc-7789-galactic-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.