Astronomy Picture of the Day · April 16, 2001

The Hydra Cluster of Galaxies

The Astronomy Picture of the Day for April 16, 2001 is “The Hydra Cluster of Galaxies,” an image. The picture is copyrighted by its creator (Credit & Copyright: David Malin ( AAO ), AATB). The original explanation runs about 126 words.

From the explanation

“The Hydra Cluster of Galaxies contains well over 100 bright galaxies – but perhaps fewer galaxies than might be expected from its mass. Clusters of galaxies are the largest gravitationally bound objects in the universe.”

— APOD editors, April 16, 2001

Read the full explanation on science.nasa.gov

At a glance

Date: April 16, 2001
Type: Image
Credit: Credit & Copyright: David Malin ( AAO ), AATB
Copyright: Copyrighted by the credited creator. Ask the copyright holder before reusing it.
Explanation length: About 126 words

All of April 2001 → · 2001 by month → · Full archive since 1995 →

Topics in this entry

Galaxies

Topics are matched from words in the title and explanation.

On this day: April 16 in other years

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Source

Astronomy Picture of the Day, April 16, 2001 — science.nasa.gov/image-article/apod-2001-april-16-the-hydra-cluster-of-galaxies

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.