Author Topic: It's Cold as Hell  (Read 411 times)

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Offline Nam

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It's Cold as Hell
« on: October 24, 2013, 05:26:45 PM »
http://earthsky.org/space/the-coldest-place-in-the-universe#.UmmdPhdd_cc
Quote
Astronomers say the Boomerang Nebula is the coldest place in the universe at one degree Kelvin (minus 458 degrees Fahrenheit). It’s even colder than background space.

Meet the Boomerang Nebula – a young example of what astronomers call a planetary nebula, although it has nothing to do with planets. This object is located some 5,000 light-years away. It once was a star much like our sun, but now it’s near the end of its life, and it has sloughed off its outer layers. Astronomers say the Boomerang Nebula is the coldest known object in the universe. They’ve learned that its temperature is one degree Kelvin (minus 458 degrees Fahrenheit). That’s even colder than the faint afterglow of the Big Bang, which is the natural background temperature of space: colder than space itself.

Astronomers announced today (October 24, 2013) that they have used the Atacama Large Millimeter/submillimeter Array (ALMA) telescope in Chile to take a new look at this object. The image below is the result of those new observations. With these observations, astronomers also have a better understanding of the shape of the Boomerang Nebula, which previously was thought to be reminiscent of a bow-tie.

Ground-based telescopes originally showed the Boomerang as appearing lopsided, which is how it got its name. In 2005, the Hubble Space Telescope revealed a bow-tie structure (see the image at the bottom of this post). The new ALMA data suggests that the twin lobes of the bow-tie may be a trick of the light as seen at visible wavelengths.

Astronomers say the Boomerang Nebula is on its way to becoming a planetary nebula; that is, eventually its central star will become a white dwarf or condensed star, which will cause the nebula to glow. Not yet, though. At this stage, the nebula is seen by starlight reflecting off its dust grains. In a press release from NRAO, astronomers who study this object explain:

The outflow of gas from this particular star is expanding rapidly and cooling itself in the process. This is similar in principle to the way refrigerators use expanding gas to produce cold temperatures.

It’s apparently the very rapid expansion of the gases that makes the nebula so cold.

Brrrrr....

-Nam
« Last Edit: October 24, 2013, 05:29:04 PM by Nam »
This is my signature "Nam", don't I have nice typing skills?

Offline William

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Re: It's Cold as Hell
« Reply #1 on: October 24, 2013, 05:35:43 PM »
Wow!  Never mind the cold, how cool is this:   :o

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At this stage, the nebula is seen by starlight reflecting off its dust grains.
Git mit uns

Offline Nam

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Re: It's Cold as Hell
« Reply #2 on: October 24, 2013, 05:37:45 PM »
Wow!  Never mind the cold, how cool is this:   :o

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At this stage, the nebula is seen by starlight reflecting off its dust grains.

But only if you have a trillion dollar telescope to view it. ;)

-Nam
This is my signature "Nam", don't I have nice typing skills?

Offline rev45

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Re: It's Cold as Hell
« Reply #3 on: October 24, 2013, 05:45:43 PM »
But only if you have a trillion dollar telescope to view it. ;)

-Nam
I should have mine by early next week.
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Offline wright

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Re: It's Cold as Hell
« Reply #4 on: October 24, 2013, 06:46:25 PM »
Fascinating; thanks Nam. A supercooled nebula... dang, but the universe is strange  :o.
Live a good life... If there are no gods, then you will be gone, but will have lived a noble life that will live on in the memories of your loved ones. I am not afraid.
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Offline Jag

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Re: It's Cold as Hell
« Reply #5 on: October 24, 2013, 06:55:32 PM »
But only if you have a trillion dollar telescope to view it. ;)

-Nam
I should have mine by early next week.

Party at rev45's!
My tolerance for BS is limited, and I use up most of it IRL.

Offline Nam

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Re: It's Cold as Hell
« Reply #6 on: October 24, 2013, 10:40:22 PM »
But only if you have a trillion dollar telescope to view it. ;)

-Nam
I should have mine by early next week.

Party at rev45's!

You distract him…do a striptease[1] while I steal it. I used to be a thief, it could work. We'll sell it to...some rich guy, and since I'm such a nice guy[2], I'll give you 60% of the take.

Are you in?

-Nam
 1. take pictures
 2. since I told you to give him a blowj...I mean striptease
« Last Edit: October 24, 2013, 10:41:55 PM by Nam »
This is my signature "Nam", don't I have nice typing skills?

Offline Jag

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Re: It's Cold as Hell
« Reply #7 on: October 24, 2013, 10:49:20 PM »
^^^I don't think I can do a strip tease and take pictures of myself doing it at the same time - this setup is only going to work if I'm taking pictures of rev45 while I'm doing a strip tease (which might make the pictures a bit shaky...*), and I'm pretty sure that's not what you wanted. Sorry.  8)

Edit:*even worse with your alternative suggestion
« Last Edit: October 24, 2013, 10:50:56 PM by Jag »
My tolerance for BS is limited, and I use up most of it IRL.

Offline Nam

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Re: It's Cold as Hell
« Reply #8 on: October 24, 2013, 11:11:14 PM »
^^^I don't think I can do a strip tease and take pictures of myself doing it at the same time - this setup is only going to work if I'm taking pictures of rev45 while I'm doing a strip tease (which might make the pictures a bit shaky...*), and I'm pretty sure that's not what you wanted. Sorry.  8)

Edit:*even worse with your alternative suggestion

I was going to say video but I didn't want to come off perverted.

;)

-Nam
This is my signature "Nam", don't I have nice typing skills?

Offline Jag

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Re: It's Cold as Hell
« Reply #9 on: October 24, 2013, 11:15:39 PM »
I think it's too late to worry about that.
My tolerance for BS is limited, and I use up most of it IRL.

Offline Nam

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Re: It's Cold as Hell
« Reply #10 on: October 24, 2013, 11:19:25 PM »
I think it's too late to worry about that.

:'(

-Nam
This is my signature "Nam", don't I have nice typing skills?

Offline Jag

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Re: It's Cold as Hell
« Reply #11 on: October 24, 2013, 11:24:20 PM »
^^^Well, it's not like I just decided that tonight!  ;D
My tolerance for BS is limited, and I use up most of it IRL.

Offline Nam

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Re: It's Cold as Hell
« Reply #12 on: October 24, 2013, 11:36:49 PM »
^^^Well, it's not like I just decided that tonight!  ;D

:'( :'(

-Nam
This is my signature "Nam", don't I have nice typing skills?

Offline rev45

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Re: It's Cold as Hell
« Reply #13 on: October 25, 2013, 06:49:34 AM »
^^^I don't think I can do a strip tease and take pictures of myself doing it at the same time - this setup is only going to work if I'm taking pictures of rev45 while I'm doing a strip tease (which might make the pictures a bit shaky...*), and I'm pretty sure that's not what you wanted. Sorry.  8)

Edit:*even worse with your alternative suggestion
You don't have to take pictures of me, I'm already posted all over the internet.  If you google search my profile pic (who is totally me by the way) you'll find a bunch of pictures of some Brad Pitt actor guy who looks suspiciously like me. 
Here read a book.  It's free.
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Could a being create the fifty billion galaxies, each with two hundred billion stars, then rejoice in the smell of burning goat flesh?   Ron Patterson

Online jynnan tonnix

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Re: It's Cold as Hell
« Reply #14 on: October 25, 2013, 09:26:37 AM »
Funny how that avatar thing works...that Brad Pitt guy looks suspiciously like both you and Nick, and even though Pianodwarf has posted a bunch of photos of some guy he claims is him, I still picture him looking a lot more like a young Johnny Depp.

I have no clue who that middle aged broad on my avatar is :)

Offline Nam

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Re: It's Cold as Hell
« Reply #15 on: October 25, 2013, 01:17:02 PM »
Funny how that avatar thing works...that Brad Pitt guy looks suspiciously like both you and Nick, and even though Pianodwarf has posted a bunch of photos of some guy he claims is him, I still picture him looking a lot more like a young Johnny Depp.

I have no clue who that middle aged broad on my avatar is :)

In real life, I am an emoticon flaming devil.

-Nam
This is my signature "Nam", don't I have nice typing skills?