Astronomy Picture of the Day ·

Anemic Galaxy NGC 4921 at the Edge

The Astronomy Picture of the Day for February 9, 2009 is “Anemic Galaxy NGC 4921 at the Edge,” an image. It is credited to Credit: NASA , ESA , K. Cook ( LLNL ). The original explanation runs about 197 words.

Anemic Galaxy NGC 4921 at the Edge
Credit: NASA , ESA , K. Cook ( LLNL ) Shown from science.nasa.gov. Not hosted by OpenOrbit.

From the explanation

“How far away is spiral galaxy NGC 4921? Although presently estimated to be about 320 million light years distant, a more precise determination could be coupled with its known recession speed to help humanity better calibrate the expansion rate of the entire visible universe.”

— APOD editors, February 9, 2009

Read the full explanation on science.nasa.gov

At a glance

Date
February 9, 2009
Type
Image
Credit
Credit: NASA , ESA , K. Cook ( LLNL )
Copyright
No copyright notice on the entry. Check the credited institution’s own usage rules before reusing it.
Explanation length
About 197 words

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

Topics in this entry

GalaxiesHubble Space Telescope

Topics are matched from words in the title and explanation.

On this day: February 9 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.