Astronomy Picture of the Day ·
Anemic Spiral NGC 4921 from Hubble
The Astronomy Picture of the Day for November 25, 2013 is “Anemic Spiral NGC 4921 from Hubble,” an image. It is credited to Image Credit: Data – Hubble Legacy Archive , ESA , NASA ; Processing – Roberto Colombari. The original explanation runs about 191 words.
From the explanation
“How far away is spiral galaxy NGC 4921? Although presently estimated to be about 310 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, November 25, 2013
Read the full explanation on science.nasa.gov
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At a glance
- Date
- November 25, 2013
- Type
- Image
- Credit
- Credit: Image Credit: Data – Hubble Legacy Archive , ESA , NASA ; Processing – Roberto Colombari
- Copyright
- No copyright notice on the entry. Check the credited institution’s own usage rules before reusing it.
- Explanation length
- About 191 words