<p>You were so close! The answer was actually given lower down on the Wikipedia page: roughly 20 <a href="https://en.wikipedia.org/wiki/Parsec" rel="nofollow">parsecs</a>. Since one parsec is about 3.26 <a href="https://en.wikipedia.org/wiki/Light-year" rel="nofollow">light-years</a>, we can calculate that that comes out to about 64 light-years, as <a href="http://amazing-space.stsci.edu/resources/fastfacts/sn1006.php.p=Capture+the+cosmos%40%2Ccapture%2C%3EStellar+evolution%40%2Ccapture%2Cstars%2C" rel="nofollow">this</a> seems to corroborate. The outer layers of the remnant are expanding outward at an outrageous rate - 11 million miles per hour, according to <a href="http://www.nasa.gov/mission_pages/chandra/multimedia/tapestry.html" rel="nofollow">NASA</a>. I invite you to do the calculations to figure out how large it will be at a certain point in time.</p>

CC BY-SA 3.0
2014-10-09T00:36:12.627Z
2014-10-09T00:36:12.627Z
HDE 226868
<p>I was enamored by the <a href="http://en.wikipedia.org/wiki/SN_1006" rel="nofollow noreferrer">wikipedia article</a> of SN1006.  Esp. the fact that it was so bright, it could cast shadows on the ground.  (Even this idea that you could have possibly read parchment with just the light from the supernova.  <a href="http://news.discovery.com/space/astronomy/astronomers-pinpoint-cause-of-sn-1006-121008.htm" rel="nofollow noreferrer">Source</a>).</p>

<p>The Question is basically what is the width (radius?) of the remnant as seen in this picture.</p>

<p><img src="https://i.sstatic.net/8O1c1.jpg" alt="Picture from WikiSky of SN1006"></p>

CC BY-SA 3.0
2014-10-08T19:03:54.860Z
This page has the answers: http://www.spacetelescope.org/images/opo0822b/
asawyer
<supernova><size>
What is the current size of the SN1006 supernova remnant?
Sid
# What is the current size of the SN1006 supernova remnant?

(Asked by: username_0 on 2014-10-08)

I was enamored by the [wikipedia article](http://en.wikipedia.org/wiki/SN_1006) of SN1006. Esp. the fact that it was so bright, it could cast shadows on the ground. (Even this idea that you could have possibly read parchment with just the light from the supernova. [Source](http://news.discovery.com/space/astronomy/astronomers-pinpoint-cause-of-sn-1006-121008.htm)).

The Question is basically what is the width (radius?) of the remnant as seen in this picture.

![Picture from WikiSky of SN1006](https://i.sstatic.net/8O1c1.jpg)

**Tags:** supernova, size
> **Comments:**
> **username_1**: This page has the answers: http://www.spacetelescope.org/images/opo0822b/  

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## 1 answers

### Answer by username_2 on 2014-10-09. Score: 3

You were so close! The answer was actually given lower down on the Wikipedia page: roughly 20 [parsecs](https://en.wikipedia.org/wiki/Parsec). Since one parsec is about 3.26 [light-years](https://en.wikipedia.org/wiki/Light-year), we can calculate that that comes out to about 64 light-years, as [this](http://amazing-space.stsci.edu/resources/fastfacts/sn1006.php.p=Capture+the+cosmos%40%2Ccapture%2C%3EStellar+evolution%40%2Ccapture%2Cstars%2C) seems to corroborate. The outer layers of the remnant are expanding outward at an outrageous rate - 11 million miles per hour, according to [NASA](http://www.nasa.gov/mission_pages/chandra/multimedia/tapestry.html). I invite you to do the calculations to figure out how large it will be at a certain point in time.


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