Astronomy Picture of the Day · January 4, 1999

Ring Around the Cluster

The Astronomy Picture of the Day for January 4, 1999 is “Ring Around the Cluster,” an image. It is credited to Credit: ISAAC, 8.2-meter VLT, ESO. The original explanation runs about 141 words.

From the explanation

“It is difficult to hide a galaxy behind a cluster of galaxies. The closer cluster’s gravity will act like a huge lens , pulling images of the distant galaxy around the sides and greatly distorting them.”

— APOD editors, January 4, 1999

Read the full explanation on science.nasa.gov

At a glance

Date: January 4, 1999
Type: Image
Credit: Credit: ISAAC, 8.2-meter VLT, ESO
Copyright: No copyright notice on the entry. Check the credited institution’s own usage rules before reusing it.
Explanation length: About 141 words

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

Topics in this entry

Galaxies

Topics are matched from words in the title and explanation.

On this day: January 4 in other years

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Source

Astronomy Picture of the Day, January 4, 1999 — science.nasa.gov/image-article/apod-1999-january-04-ring-around-the-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.