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Q: astronomy ( Answered 4 out of 5 stars,   0 Comments )
Subject: astronomy
Category: Science
Asked by: mongolia-ga
List Price: $4.00
Posted: 27 Apr 2003 14:26 PDT
Expires: 27 May 2003 14:26 PDT
Question ID: 196236
What is the closest quasar to us?
Subject: Re: astronomy
Answered By: sldreamer-ga on 27 Apr 2003 17:07 PDT
Rated:4 out of 5 stars
Hi mongolia,

The closest quasar is 600 million light years away, and it is located
in the Cygnus A (3C405) galaxy.

A page on the Arizona State University web site displays a radio image
of the quasar, along with the following caption that identifies the
quasar using the name of the galaxy in which it resides:

"This is a radio image of Cygnus A (3C405) the closest quasar found. 
Its closeness brings into question the currently held theory that all
quasars are very distant and old objects."

Arizona State University - Noble Science and Engineering Library -

While researching this question, I found several web sites that state
that quasar 3C273 is the closest quasar.  But that quasar is over 1.5
billion light years away, so it cannot be the closest quasar.

A news release on the NASA web site tells us that the quasar in the
Cygnus A (3C405) galaxy is 600 million light years away:

"Astronomers using NASA's Hubble Space Telescope have found a new
quasar -- not billions of light years away like its known cousins, but
mere 600 million light years, the equivalent of Earth's cosmic

"The discovery in galaxy Cygnus A will give astronomers their first
opportunity for detailed study of a quasar [...]"

Hubble Uncovers a Hidden Quasar in a Nearby Galaxy (September 21,

I hope this helps.


Search strategy:

(closest OR nearest) quasar

"closest quasar" OR "nearest quasar"

quasar "cygnus a"

galaxy "cygnus a" 3c405
mongolia-ga rated this answer:4 out of 5 stars
Good Answer.

  Thanks for your help.

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