Astronomy Picture of the Day · February 20, 2002

Oddities of Star Cluster NGC 6397

The Astronomy Picture of the Day for February 20, 2002 is “Oddities of Star Cluster NGC 6397,” an image. It is credited to Credit: Francesco Ferraro ( Bologna Observatory ), ESA , NASA. The original explanation runs about 145 words.

From the explanation

“One of these stars is blinking. This star , a member of globular cluster NGC 6397, is noteworthy not just because it blinks, but because it blinks so fast and because its companion star is so atypical.”

— APOD editors, February 20, 2002

Read the full explanation on science.nasa.gov

At a glance

Date: February 20, 2002
Type: Image
Credit: Credit: Francesco Ferraro ( Bologna Observatory ), ESA , NASA
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: February 20 in other years

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Source

Astronomy Picture of the Day, February 20, 2002 — science.nasa.gov/image-article/apod-2002-february-20-oddities-of-star-cluster-ngc-6397

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.