Astronomy Picture of the Day ·
M39: Open Cluster in Cygnus
The Astronomy Picture of the Day for April 12, 2009 is “M39: Open Cluster in Cygnus,” an image. It is credited to Credit: Heidi Schweiker , WIYN , NOAO , AURA , NSF. The original explanation runs about 126 words.
From the explanation
“Lying just at the limit of human perception is a picturesque starfield containing one of the larger open clusters on the northern sky. Spanning an angle larger than the Moon , M39’s relatively few stars lie only about 800 light years distant toward the constellation of Cygnus .”
— APOD editors, April 12, 2009
Read the full explanation on science.nasa.gov
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At a glance
- Date
- April 12, 2009
- Type
- Image
- Credit
- Credit: Heidi Schweiker , WIYN , NOAO , AURA , NSF
- Copyright
- No copyright notice on the entry. Check the credited institution’s own usage rules before reusing it.
- Explanation length
- About 126 words