Simeis 147: Supernova Remnant from Palomar

Man, I thought I had vacuumed all those out from under the bed … :angry:

djm

Denny, I have loved you picture posts…but this one tops them all in my eyes!

Wonder if I can get a poster of it…??

How long would it be before a subsequent photo showed any noticable change? My meagre brain can’t handle the sheer size of these things so I’m hoping I can understand the timescale.

Well, it’s 3000 light years away, so that photo shows what it looked like 3000 years ago. It’s already changed some I reckon, but it’ll be another 3000 years before we see the changes that are happening now.

But if they take another photo in a week’s time would I see a difference? It looks like it’s expanding to me but if so how fast?

Wow, an unravelled hank of cosmic yarn. :smiley: Coolness to the extreme there Denny dude. :smiley:

It’s taken 100,000 years for it to get like wot we’re seeing it as now, sort of spherical, with a diameter of 150 light years. I reckon it’d take a very long time indeed for us to be able to register any noticeable changes from here.

If you think of it as a balloon expanding at a constant rate of 0.0015 “units per year”, and it’s currently 150 units across, how much bigger will it seem to the naked eye in a year? .0015 units in all directions. Not very much.

Tyg, if you click the pic it will take you to the pic’s page. If you click the pic on it’s page it will take you to a large JPG. Save as the large picture.

Contact a local Kinko’s, (or a camera shop or a electronics store). Many offer this service.

-OR-
There is a credit in the lower left corner of the large JPG for the picture’s creator’s site.

All, nice one, eh? Check the creator’s link…he does good!

I should have known it would be on too grand a scale for my poor brain. One of my ambitions is to see the Grand Canyon because I can’t get my head round the size of it so I suppose I haven’t really got much chance of comprehending space, the final mind-blower.