Astronomy Picture of the Day · July 3, 2001

Unusual Flashes Toward Globular Cluster M22

The Astronomy Picture of the Day for July 3, 2001 is “Unusual Flashes Toward Globular Cluster M22,” an image. It is credited to Credit: K. Sahu ( STScI ) et al., WFPC2 , HST , NASA Inset: N. A. Sharp , REU program / NOAO / AURA / NSF. The original explanation runs about 145 words.

From the explanation

“What is causing the unusual flashes behind globular cluster M22? This teeming ball of stars is the brightest globular cluster visible from Earth’s northern hemisphere.”

— APOD editors, July 3, 2001

Read the full explanation on science.nasa.gov

At a glance

Date: July 3, 2001
Type: Image
Credit: Credit: K. Sahu ( STScI ) et al., WFPC2 , HST , NASA Inset: N. A. Sharp , REU program / NOAO / AURA / NSF
Copyright: No copyright notice on the entry. Check the credited institution’s own usage rules before reusing it.
Explanation length: About 145 words

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Topics in this entry

Star clusters

Topics are matched from words in the title and explanation.

On this day: July 3 in other years

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Source

Astronomy Picture of the Day, July 3, 2001 — science.nasa.gov/image-article/apod-2001-july-3-unusual-flashes-toward-globular-cluster-m22

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.