Astronomy Picture of the Day · October 21, 2006

Tombaugh 4

The Astronomy Picture of the Day for October 21, 2006 is “Tombaugh 4,” an image. The picture is copyrighted by its creator (Credit & Copyright: Dean Rowe). The original explanation runs about 130 words.

From the explanation

“Clyde Tombaugh discovered planet Pluto in 1930 while surveying the skies with the 13-inch Lawrence Lowell Telescope. But the skilled and careful astronomer also went on to discover star clusters, comets, asteroids, and clusters of galaxies.”

— APOD editors, October 21, 2006

Read the full explanation on science.nasa.gov

At a glance

Date: October 21, 2006
Type: Image
Credit: Credit & Copyright: Dean Rowe
Copyright: Copyrighted by the credited creator. Ask the copyright holder before reusing it.
Explanation length: About 130 words

All of October 2006 → · 2006 by month → · Full archive since 1995 →

Topics in this entry

Galaxies Star clusters Comets Asteroids

Topics are matched from words in the title and explanation.

On this day: October 21 in other years

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Source

Astronomy Picture of the Day, October 21, 2006 — science.nasa.gov/image-article/apod-2006-october-21-tombaugh-4

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.