Astronomy Picture of the Day ·

M55: Color Magnitude Diagram

The Astronomy Picture of the Day for February 23, 2001 is “M55: Color Magnitude Diagram,” an image. It is credited to B.J. Mochejska , J. Kaluzny ( CAMK ), 1m Swope Telescope. The original explanation runs about 262 words.

M55: Color Magnitude Diagram
Credit: B.J. Mochejska , J. Kaluzny ( CAMK ), 1m Swope Telescope Shown from science.nasa.gov. Not hosted by OpenOrbit.

From the explanation

“This color “picture” of globular star cluster M55 may not look like any star cluster you’ve ever seen. Still, it shows a most fundamental view for students of stellar astronomy.”

— APOD editors, February 23, 2001

Read the full explanation on science.nasa.gov

At a glance

Date
February 23, 2001
Type
Image
Credit
Credit: B.J. Mochejska , J. Kaluzny ( CAMK ), 1m Swope Telescope
Copyright
No copyright notice on the entry. Check the credited institution’s own usage rules before reusing it.
Explanation length
About 262 words

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

Topics in this entry

The SunStar clusters

Topics are matched from words in the title and explanation.

On this day: February 23 in other years

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Source

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.