Space Anemic Galaxy NGC 4921 at the Edge

Robby

The News Robot
Joined
Jul 28, 2004
Location
Terra
#1
NASA Astronomy Picture Of The Day
Anemic Galaxy NGC 4921 at the Edge



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Anemic Galaxy NGC 4921 at the Edge
Credit: NASA, ESA, K. Cook (LLNL)

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. Toward this goal, this image was taken by the Hubble Space Telescope in order to help identify key stellar distance markers know as Cepheid variable stars. Since NGC 4921 is a member of the Coma Cluster of Galaxies, refining its distance would also allow a better distance determination to one of the largest
 

painkiller64

Avoid A Void
Joined
Sep 15, 2006
Location
kansas
#2
isnt it amazing to see this image. viewing this as it was approx 320 million years ago. if only we could travel there now to see what it is like.
 
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