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onehandle

(51,122 posts)
Thu May 31, 2012, 03:27 PM May 2012

The end of the Milky Way galaxy as we know it

Source: CNN

(CNN) - Our Milky Way galaxy is an anomaly in more ways than one. And now, NASA scientists say they know exactly when it will come to an end. In a universe that is forever spreading apart, the Milky Way has been moving closer to celestial neighbor the Andromeda galaxy. But whether we are in for intergalactic Armageddon or an extraterrestrial fender bender has been a mystery -- until now.

"Very interestingly, we find that Andromeda galaxy does appear to be coming straight at us," said Roeland van der Marel, an astronomer at the Space Telescope Science Institute in Baltimore. He was scheduled to speak at a NASA press conference Thursday.

The discovery was made thanks to images taken over the 22-year lifespan of the Hubble Space Telescope. But the quest to determine the Milky Way galaxy's expiration date has been undertaken by astronomers for more than 100 years. Now, for the first time, NASA scientists say they know "with certainty" when our beloved galaxy will cease to exist as we know it, what it will look like and how it will happen.

New data collected by the Hubble Space Telescope proves, NASA says, that in 4 billion years the Milky Way and Andromeda will collide or pass each other by so closely that the gravitational force each exerts on the other will cause them to slow down to the point of merging. The merger will be completed 6 billion years from now.


Read more: http://www.abcactionnews.com/dpp/news/science_tech/the-end-of-the-milky-way-galaxy-as-we-know-it

59 replies = new reply since forum marked as read
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The end of the Milky Way galaxy as we know it (Original Post) onehandle May 2012 OP
Film at 11 jberryhill May 2012 #1
That's how I see it panning out . may3rd May 2012 #32
Well, I feel much better now. freshwest May 2012 #34
Oh, this won't go over well in the South. They're against interspatial unions. nt valerief May 2012 #41
But I was going to have my hair done Nuclear Unicorn May 2012 #2
And of course, Obama isn't doing ANYTHING about it. Ian David May 2012 #3
The President is so LIHOP on this. nt onehandle May 2012 #9
Are you kidding? The tribal elders in Kenya put this plan in place over a century ago... Blue_Tires May 2012 #12
Oh hell does that mean we are Iliyah May 2012 #4
Andromeda and Milky are about to have Galactic Sex malthaussen May 2012 #5
Won't matter much. Earth will be a dead planet by then. sinkingfeeling May 2012 #6
True kenfrequed May 2012 #7
No, our sun won't become a red giant for another 5 billion years. Lasher May 2012 #14
It is extremely unlikely that the collision will do anything to Earth. jeff47 May 2012 #17
Suppose we also end up with a larger, more elliptical orbit around our own sun? FiveGoodMen May 2012 #42
That would actually be more helpful jeff47 May 2012 #48
Uhm... kenfrequed May 2012 #30
Red giant is when it expands to consume the Earth jeff47 May 2012 #49
No, that's going to happen in about 5 billion years jeff47 May 2012 #15
Perhaps randome May 2012 #8
OMG better prepare for the Rapture now LynneSin May 2012 #10
Oh CNN. wial May 2012 #11
Collisionj?? nahant May 2012 #13
I'm sure North Carolina will make this illegal. MinneapolisMatt May 2012 #16
lol jeff47 May 2012 #18
This has been a bad, embarassing month to be from NC (I should know) TalkingDog May 2012 #26
another up side... awoke_in_2003 May 2012 #43
This message was self-deleted by its author bupkus May 2012 #28
In fundie time, that's 6000 years from now. n/t cynatnite May 2012 #19
Maybe I'm simple-minded, but if everything's moving away from the Big Bang, how do galaxies collide? qb May 2012 #20
The close clusters of galaxies still are affected by gravitational attraction to one another. Gore1FL May 2012 #21
This message was self-deleted by its author bupkus May 2012 #29
Hmmm... kenfrequed May 2012 #31
You are correct. Gore1FL May 2012 #35
I was wondering about that as well? Uncle Joe May 2012 #23
Here's a good article on the collision... Fearless Jun 2012 #56
Well, when a mommy galaxy and a daddy galaxy love each other very much ... Arugula Latte May 2012 #47
Perfect!!!!! dixiegrrrrl May 2012 #52
If this makes the news tonight, everyone willl clean out the bread and milk at their local stores. bulloney May 2012 #22
I hope after cryogenic freezing I get to see Mildromeda! SWTORFanatic May 2012 #24
Milkomeda! Odin2005 May 2012 #44
And I feel fine! dbackjon May 2012 #25
This message was self-deleted by its author bupkus May 2012 #27
what a shame....Proof only the good die young may3rd May 2012 #33
Woot! Let the looting begin! nt ZombieHorde May 2012 #36
The entire Virgo Supercluster is moving toward the Great Attractor. joshcryer May 2012 #37
WAIT! WAIT! (tilts head) Are we insured for that kind of collision? Poll_Blind May 2012 #38
Meh I announced this on DU Feb 2010 I thought everyone already had their bags packed. grantcart May 2012 #39
"0. The end of the Milky Way galaxy as we know it;" greiner3 May 2012 #40
Cosmic cleanup on aisle 5! Odin2005 May 2012 #45
If the GOP wins this election, no more humanity. If Obama wins, we will still be around BanTheGOP May 2012 #46
What does Hershey have to say about all this? Starboard Tack May 2012 #50
I'm still betting that Andromeda will swerve first. jmondine May 2012 #51
I won't be around in 4 billion years Rosa Luxemburg Jun 2012 #53
But what about your great X 10^23 graandchildren? Maven Jun 2012 #54
Think how much life has changed in the last half a billion years FiveGoodMen Jun 2012 #57
Yeah, but I'll bet there'll still be cockroaches scurrying around sylvi Jun 2012 #58
I blame Canada pinboy3niner Jun 2012 #55
I'll be too old to care by then :-) madokie Jun 2012 #59

Lasher

(27,553 posts)
14. No, our sun won't become a red giant for another 5 billion years.
Thu May 31, 2012, 03:57 PM
May 2012

But now that's all pretty much academic. Dammit, I thought we had another 5 billion years to go and now it looks like we only have 4 billion.

jeff47

(26,549 posts)
17. It is extremely unlikely that the collision will do anything to Earth.
Thu May 31, 2012, 04:02 PM
May 2012

Galaxies are mostly empty space. It's very unlikely that anything from Andromeda will hit our solar system.

It's expected we'll have a larger, more elliptical orbit around the center of the new, merged galaxy. But that's not gonna destroy anything.

jeff47

(26,549 posts)
48. That would actually be more helpful
Thu May 31, 2012, 09:10 PM
May 2012

As the sun moves through the main sequence, it's gonna get hotter. In about 3 billion years, it's going to be hot enough to boil all the water off the Earth.

So if a billion years later we're farther from the sun, that would actually get us closer to our current climate.

But that empty space means it's very unlikely that there will be any effect on Earth's orbit.

jeff47

(26,549 posts)
49. Red giant is when it expands to consume the Earth
Thu May 31, 2012, 09:12 PM
May 2012

The sun is going to stay about the same size for the next 5 billion years.

jeff47

(26,549 posts)
15. No, that's going to happen in about 5 billion years
Thu May 31, 2012, 03:59 PM
May 2012

Which puts it a billion years after the collision.

However, all water on Earth is expected to boil away in about 3 billion years as the sun moves through the main sequence. It just won't be a red giant yet.

wial

(437 posts)
11. Oh CNN.
Thu May 31, 2012, 03:52 PM
May 2012

The Milky Way is NOT an anomaly. It's a perfectly normal galaxy, one of billions that are similar. And galaxies collide all the time.

We live at an anomalously early point in the history of the universe, to be sure, but that's got nothing to do with the particular galaxy we're in, rather some other factor about the eventual role of intelligences in universes we have yet to surmise. Or maybe pure random chance although that's less likely.

TalkingDog

(9,001 posts)
26. This has been a bad, embarassing month to be from NC (I should know)
Thu May 31, 2012, 04:51 PM
May 2012

On the up side, we did run the Klan meeting, scheduled in our area, to out of state.

 

awoke_in_2003

(34,582 posts)
43. another up side...
Thu May 31, 2012, 08:35 PM
May 2012

you guys have the barrier islands. I try to get to Atlantic Beach every couple years.

Response to MinneapolisMatt (Reply #16)

qb

(5,924 posts)
20. Maybe I'm simple-minded, but if everything's moving away from the Big Bang, how do galaxies collide?
Thu May 31, 2012, 04:07 PM
May 2012

Gore1FL

(21,122 posts)
21. The close clusters of galaxies still are affected by gravitational attraction to one another.
Thu May 31, 2012, 04:16 PM
May 2012

Space itself is expanding, but close galaxies are traveling through it towards one another due to that attraction at a rate faster than the expansion of the space it is traveling through.

Response to Gore1FL (Reply #21)

kenfrequed

(7,865 posts)
31. Hmmm...
Thu May 31, 2012, 05:21 PM
May 2012

I sort of imagined it as droplets of mist on the skin of an expanding balloon... but that isn't quite right either.

Uncle Joe

(58,338 posts)
23. I was wondering about that as well?
Thu May 31, 2012, 04:32 PM
May 2012

Which galaxy is farther away or younger from the origins of the Big Bang and why is the other catching up?

Response to onehandle (Original post)

joshcryer

(62,269 posts)
37. The entire Virgo Supercluster is moving toward the Great Attractor.
Thu May 31, 2012, 06:49 PM
May 2012

100 billion years from now we'll have a super galaxy (trillions of stars).

Poll_Blind

(23,864 posts)
38. WAIT! WAIT! (tilts head) Are we insured for that kind of collision?
Thu May 31, 2012, 06:53 PM
May 2012

What're the monthly premiums on that shit?



PB

 

greiner3

(5,214 posts)
40. "0. The end of the Milky Way galaxy as we know it;"
Thu May 31, 2012, 07:00 PM
May 2012

By the title I thought the OP might be a story about Newt's big head exploding or something similar.

 

BanTheGOP

(1,068 posts)
46. If the GOP wins this election, no more humanity. If Obama wins, we will still be around
Thu May 31, 2012, 08:57 PM
May 2012

It is that simple. IF the GOP wins, we destroy ourselves through war, famine, and an impossible to bridge gulf between the Romneyites and the vast majority of humanity. If Obama wins, the much-needed legislation will ensure that we survive as a species, and our progressive, collectivist nature will allow our intelligence to survive in a post-galactic environment.

FiveGoodMen

(20,018 posts)
57. Think how much life has changed in the last half a billion years
Wed Jun 6, 2012, 08:12 PM
Jun 2012

If we have living descendants 4 billion years from now, we'd never recognize them.

More likely, we'll be long gone before that.

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