Astronomy Picture of the Day ·

M13: The Great Globular Cluster in Hercules

The Astronomy Picture of the Day for May 12, 2017 is “M13: The Great Globular Cluster in Hercules,” an image. The picture is copyrighted by its creator (Image Credit & Copyright: Adam Block , Mt. Lemmon SkyCenter , U. Arizona). The original explanation runs about 152 words.

M13: The Great Globular Cluster in Hercules
Credit: Image Credit & Copyright: Adam Block , Mt. Lemmon SkyCenter , U. Arizona Copyrighted Shown from science.nasa.gov. Not hosted by OpenOrbit.

From the explanation

“In 1716 , English astronomer Edmond Halley noted, “This is but a little Patch, but it shews itself to the naked Eye, when the Sky is serene and the Moon absent.” Of course, M13 is now less modestly recognized as the Great Globular Cluster in Hercules, one of the brightest globular star clusters in the northern sky.”

— APOD editors, May 12, 2017

Read the full explanation on science.nasa.gov

At a glance

Date
May 12, 2017
Type
Image
Credit
Credit: Image Credit & Copyright: Adam Block , Mt. Lemmon SkyCenter , U. Arizona
Copyright
Copyrighted by the credited creator. Ask the copyright holder before reusing it.
Explanation length
About 152 words

All of May 2017 → · 2017 by month → · Full archive since 1995 →

Topics in this entry

The MoonStar clusters

Topics are matched from words in the title and explanation.

On this day: May 12 in other years

On Amazon

Popular picks for space fans

As an Amazon Associate I earn from qualifying purchases.

Electronics Amazon Kindle Paperwhite Signature Edition 32GB Read astronomy and space-history books anywhere. View on Amazon → Electronics Bose QuietComfort Wireless Headphones Noise-cancelling headphones for documentaries and launch livestreams. View on Amazon →

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.