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Astronomy Picture of the Day -- Light Echoes from V838 Mon
NASA ^ | December 04, 2011 | (see photo credit)

Posted on 12/03/2011 9:56:40 PM PST by SunkenCiv

Explanation: For reasons unknown, star V838 Mon's outer surface suddenly greatly expanded with the result that it became the brightest star in the entire Milky Way Galaxy in January 2002. Then, just as suddenly, it faded. A stellar flash like this has never been seen before. It's true that supernovae and novae expel matter out into space. But while the V838 Mon flash appears to expel material into space, what is seen here is actually an outwardly moving light echo of the bright flash. In a light echo, light from the flash is reflected by successively more distant rings in the ambient interstellar dust that already surrounded the star. V838 Mon lies about 20,000 light years away toward the constellation of Monoceros the unicorn. In this Hubble Space Telescope image from February 2004, the light echo is about six light years in diameter.

December 04, 2011

(Excerpt) Read more at 129.164.179.22 ...


TOPICS: Astronomy; Astronomy Picture of the Day; Science
KEYWORDS: apod; astronomy; monoceros; science; v838mon
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[Credit: NASA, ESA, H. E. Bond (STScI)]

1 posted on 12/03/2011 9:56:54 PM PST by SunkenCiv
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To: brytlea; cripplecreek; decimon; bigheadfred; KoRn; Grammy; married21; steelyourfaith; Mmogamer; ...

Ooooh! Ahhhhh!

2 posted on 12/03/2011 9:58:28 PM PST by SunkenCiv (It's never a bad time to FReep this link -- https://secure.freerepublic.com/donate/)
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To: SunkenCiv

Awesome!


3 posted on 12/03/2011 10:11:32 PM PST by unkus (Silence Is Consent)
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To: SunkenCiv

Thank You


4 posted on 12/03/2011 10:33:09 PM PST by mosesdapoet (Moses ..A nick name I received as a kid for warning another -It's a sin to tell a lie")
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To: SunkenCiv

HAL! That’s some upgrade!


5 posted on 12/03/2011 10:49:53 PM PST by tanuki (O-voters: wanted Uberman, got Underdog....)
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To: SunkenCiv

Looks like a magnificent jewel!


6 posted on 12/03/2011 11:27:56 PM PST by onyx (PLEASE SUPPORT FREE REPUBLIC:DONATE MONTHLY! Sarah's New Ping List - tell me if you want on it.)
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To: SunkenCiv

Thanks for today’s wallpaper upgrade.
Cracking image.


7 posted on 12/04/2011 3:04:24 AM PST by moose07 (The truth will out, one day.)
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To: SunkenCiv
For reasons unknown, star V838 Mon's outer surface suddenly greatly expanded with the result that it became the brightest star in the entire Milky Way Galaxy in January 2002. Then, just as suddenly, it faded.

Sorta like a Republican presidential candidate.

8 posted on 12/04/2011 3:14:35 AM PST by EternalVigilance (Newt Gingrich: The go-to guy for a party that is determined to waste yet another decade.)
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To: SunkenCiv
like this has never been seen before

Hmmmm. But have they been to 3 county fairs and 2 goat effings and ain't never seen nutin' like it?

9 posted on 12/04/2011 3:47:51 AM PST by LRS ("This is silly! It can't be! It can't be!!" "Oh yes it is! I said you wouldn't know the joint.")
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To: SunkenCiv

This blows my mind! The article says that in 2002 this star became the brightest in the Milky Way. Since this star is 20,000 light years away the event actually occurred 20,000 years ago. The Wooly Mammoth still had 10,000 years left to roam the earth. The Ice Age was at it’s peak. A lot happened here on Earth between the time this star became bright and the time we saw it. When you gaze into the night sky you’re seeing history. Ancient history. Some of what you see may no longer actually exist and some things may actually exist that we can’t see yet. Everybody finds God in different places, I find him in the stars.


10 posted on 12/04/2011 4:07:56 AM PST by 762X51
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To: SunkenCiv

Beautiful, but eerie at the same time.


11 posted on 12/04/2011 4:12:36 AM PST by ixtl ( You live and learn. Or you don't live long.)
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To: SunkenCiv

Now that is cool.

I’m asking Santa for a Hubble for Christmas.


12 posted on 12/04/2011 4:40:51 AM PST by bigheadfred
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To: SunkenCiv

Beautiful, SunkenCiv!


13 posted on 12/04/2011 4:47:41 AM PST by momtothree
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To: SunkenCiv

Reminds me a little of the maw that planet eating machine had in an original Star Trek.


14 posted on 12/04/2011 5:14:51 AM PST by 2nd Bn, 11th Mar (The "p" in Democrat stands for patriotism.)
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To: SunkenCiv

That is my Ultimate Favorite APOD PIC!


15 posted on 12/04/2011 5:22:15 AM PST by left that other site (Psalm 122:6)
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To: unkus; mosesdapoet; tanuki; onyx; moose07; EternalVigilance; LRS; 762X51; ixtl; bigheadfred; ...

Thank you all, for the kind remarks.

Doesn’t this remind you of the Mozilla icon?


16 posted on 12/04/2011 6:54:33 AM PST by SunkenCiv (It's never a bad time to FReep this link -- https://secure.freerepublic.com/donate/)
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To: SunkenCiv

ha Ha! You are RIGHT! It DOES!


17 posted on 12/04/2011 6:58:49 AM PST by left that other site (Psalm 122:6)
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To: SunkenCiv

Perhaps.

18 posted on 12/04/2011 6:58:49 AM PST by hoagy62 (The United States of America. Great idea...while it lasted.)
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To: onyx
Hey girl!
I've been getting this off and on all day.

Service Temporarily Unavailable The server is temporarily unable to service your request due to maintenance downtime or capacity problems. Please try again later.

Are you trying to start the next Freepathon up a little early??? LOL

19 posted on 12/04/2011 11:23:55 AM PST by deoetdoctrinae (Gun-Free zones are playgrounds for felons)
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To: deoetdoctrinae

LOLOLOL.

Perish the thought!

We’ll be back in business soon enough!

GOOD to see you! Rest up!


20 posted on 12/04/2011 2:52:25 PM PST by onyx (PLEASE SUPPORT FREE REPUBLIC:DONATE MONTHLY! Sarah's New Ping List - tell me if you want on it.)
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