Astronomy Picture of the Day · December 4, 2009

The Double Cluster

The Astronomy Picture of the Day for December 4, 2009 is “The Double Cluster,” an image. The picture is copyrighted by its creator (Credit & Copyright: Neil Fleming). The original explanation runs about 115 words.

From the explanation

“A lovely starfield in the heroic northern constellation Perseus holds this famous pair of open or galactic star clusters, h and Chi Persei . Also cataloged as NGC 869 (right) and NGC 884, both clusters are about 7,000 light-years away and contain stars much younger and hotter than the Sun.”

— APOD editors, December 4, 2009

Read the full explanation on science.nasa.gov

At a glance

Date: December 4, 2009
Type: Image
Credit: Credit & Copyright: Neil Fleming
Copyright: Copyrighted by the credited creator. Ask the copyright holder before reusing it.
Explanation length: About 115 words

All of December 2009 → · 2009 by month → · Full archive since 1995 →

Topics in this entry

The Sun Star clusters

Topics are matched from words in the title and explanation.

On this day: December 4 in other years

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Source

Astronomy Picture of the Day, December 4, 2009 — science.nasa.gov/image-article/apod-2009-december-4-the-double-cluster

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.