Go Back   IceInSpace > General Astronomy > General Chat
Register FAQ Calendar Today's Posts Search

Reply
 
Thread Tools Rate Thread
  #1  
Old 26-04-2011, 02:08 PM
multiweb's Avatar
multiweb (Marc)
ze frogginator

multiweb is offline
 
Join Date: Oct 2007
Location: Sydney
Posts: 22,079
Pillars in M16 long gone?

I was playing with SkySafari on my iPod and in the description for the eagle nebula there's a HST shot of it and a quick blurb about the pillars having been blown apart by a super nova already, further saying that we will only see their new shape in approx. 1000 years. Is this true? I understand the light travels at a finite speed so we'll see the real picture later but how do they know the nova already exploded? Apparently found out in 2007 with the spitzer space telescope.
Reply With Quote
  #2  
Old 26-04-2011, 03:39 PM
mithrandir's Avatar
mithrandir (Andrew)
Registered User

mithrandir is offline
 
Join Date: Jan 2009
Location: Glenhaven
Posts: 4,161
Quote:
Originally Posted by multiweb View Post
I was playing with SkySafari on my iPod and in the description for the eagle nebula there's a HST shot of it and a quick blurb about the pillars having been blown apart by a super nova already, further saying that we will only see their new shape in approx. 1000 years. Is this true? I understand the light travels at a finite speed so we'll see the real picture later but how do they know the nova already exploded? Apparently found out in 2007 with the spitzer space telescope.
A quick search pulled up one analysis that said it could be a million years before the shockwave reaches the pillars. Somehow I don't think I need worry they'll disappear in my lifetime.

Andrew
Reply With Quote
  #3  
Old 26-04-2011, 05:24 PM
CraigS's Avatar
CraigS
Unpredictable

CraigS is offline
 
Join Date: Jul 2010
Location: Australia
Posts: 3,023
Quote:
Originally Posted by multiweb View Post
I was playing with SkySafari on my iPod and in the description for the eagle nebula there's a HST shot of it and a quick blurb about the pillars having been blown apart by a super nova already, further saying that we will only see their new shape in approx. 1000 years. Is this true? I understand the light travels at a finite speed so we'll see the real picture later but how do they know the nova already exploded? Apparently found out in 2007 with the spitzer space telescope.
Hi Marc;

A bit of a blurb here … Spitzer photo is awesome, as usual.

The red region was taken in the 24 micron wavelength and represents hot dust thought to have been caused by a supernova about 8,000 to 9,000 years ago. Light takes 7k years to get to us, so the supernova should've appeared to us, between 1k to 2k years ago. We're presently seeing the 'immediate' afterglow. The blast would've 'tumbled' the towers about 6k years ago but we'll have to wait for another 1k years to photograph the effects.

Hope this helps.
Cheers
Reply With Quote
  #4  
Old 26-04-2011, 06:39 PM
multiweb's Avatar
multiweb (Marc)
ze frogginator

multiweb is offline
 
Join Date: Oct 2007
Location: Sydney
Posts: 22,079
Cool - thanks Craig, makes sense now.
Reply With Quote
  #5  
Old 26-04-2011, 07:54 PM
tlgerdes's Avatar
tlgerdes (Trevor)
Love the moonless nights!

tlgerdes is offline
 
Join Date: Mar 2009
Location: Sydney
Posts: 2,285
So Marc, you had better start imaging before it goes from Eagle to Roast Turkey
Reply With Quote
  #6  
Old 27-04-2011, 10:16 AM
Suzy's Avatar
Suzy
Searching for Travolta...

Suzy is offline
 
Join Date: Jan 2010
Location: Brisbane, Australia.
Posts: 3,700
Wow, really interesting stuff.
Thanks for that link Craig, it was a goody.
Reply With Quote
  #7  
Old 27-04-2011, 06:43 PM
shelltree's Avatar
shelltree (Shelley)
Stargazer

shelltree is offline
 
Join Date: Jul 2009
Location: Brisbane, Australia
Posts: 842
Wow, that's amazing! Thanks for the info Craig, the Universe really does astound me every day!
Reply With Quote
  #8  
Old 27-04-2011, 10:29 PM
multiweb's Avatar
multiweb (Marc)
ze frogginator

multiweb is offline
 
Join Date: Oct 2007
Location: Sydney
Posts: 22,079
Quote:
Originally Posted by tlgerdes View Post
So Marc, you had better start imaging before it goes from Eagle to Roast Turkey
Yeah, I'm still to get a good one. It's raining With my luck they'll be gone next time I set up.
Reply With Quote
  #9  
Old 28-04-2011, 07:08 AM
CraigS's Avatar
CraigS
Unpredictable

CraigS is offline
 
Join Date: Jul 2010
Location: Australia
Posts: 3,023
Soggy roast turkey pillars, eh !
Yuk !

Cheers
Reply With Quote
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +10. The time is now 06:14 AM.

Powered by vBulletin Version 3.8.7 | Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Advertisement
Bintel
Advertisement