Andromeda galaxy To Merge With Our Milky Way

Master Conspirator
User avatar
Posts: 10110
Joined: Wed Jul 01, 2009 10:10 pm
Location: Packing my stuff and moving to Denver like you should be doing

PostTue Jun 05, 2012 5:30 pm » by Savwafair2012


The Milky Way is destined to get a major makeover during the encounter, which is predicted to happen four from now. It is likely the sun will be flung into a new region of our galaxy

Image


http://phys.org/news/2012-05-hubble-mil ... l#firstCmt

This illustration shows the collision paths of our Milky Way galaxy and the Andromeda galaxy. The galaxies are moving toward each other under the inexorable pull of gravity between them. Also shown is a smaller galaxy, Triangulum, which may be part of the smashup. (Credit: NASA; ESA; A. Feild and R. van der Marel, STScI)

(Phys.org) -- NASA astronomers announced Thursday they can now predict with certainty the next major cosmic event to affect our galaxy, sun, and solar system: the titanic collision of our Milky Way galaxy with the neighboring Andromeda galaxy.


The Milky Way is destined to get a major makeover during the encounter, which is predicted to happen four billion years from now. It is likely the sun will be flung into a new region of our galaxy, but our Earth and solar system are in no danger of being destroyed.

"Our findings are statistically consistent with a head-on collision between the Andromeda galaxy and our Milky Way galaxy," said Roeland van der Marel of the Space Telescope Science Institute (STScI) in Baltimore.


Upload to Disclose.tv



The solution came through painstaking NASA Hubble Space Telescope measurements of the motion of Andromeda, which also is known as M31. The galaxy is now 2.5 million light-years away, but it is inexorably falling toward the Milky Way under the mutual pull of gravity between the two galaxies and the invisible dark matter that surrounds them both.

http://www.nasa.gov/mission_pages/hubbl ... llide.html

"After nearly a century of speculation about the future destiny of Andromeda and our Milky Way, we at last have a clear picture of how events will unfold over the coming billions of years," said Sangmo Tony Sohn of STScI.

The scenario is like a baseball batter watching an oncoming fastball. Although Andromeda is approaching us more than 2,000 times faster, it will take 4 billion years before the strike.

Computer simulations derived from Hubble's data show that it will take an additional two billion years after the encounter for the interacting galaxies to completely merge under the tug of gravity and reshape into a single elliptical galaxy similar to the kind commonly seen in the local universe.

Image

Although the galaxies will plow into each other, stars inside each galaxy are so far apart that they will not collide with other stars during the encounter. However, the stars will be thrown into different orbits around the new galactic center. Simulations show that our solar system will probably be tossed much farther from the galactic core than it is today
Image
FAIR USE NOTICE.
Section 107 of the US Copyright Law. In accordance with Title 17 U.S.C. Section 107, . http://www.law.cornell.edu/uscode/17/107.shtml

Conspirator
User avatar
Posts: 2346
Joined: Fri Aug 22, 2008 11:35 pm

PostTue Jun 05, 2012 5:35 pm » by Icarus1


lol , all this crap about planet x and when they tell us we are going to be hit with a galaxy nobody blinks an eyelid , i despair for our puny race
“Two possibilities exist: either we are alone in the Universe or we are not. Both are equally terrifying.”

Initiate
User avatar
Posts: 424
Joined: Thu Sep 23, 2010 7:59 pm
Location: United Kingdom

PostTue Jun 05, 2012 6:46 pm » by Shendao


Icarus1 wrote:lol , all this crap about planet x and when they tell us we are going to be hit with a galaxy nobody blinks an eyelid , i despair for our puny race


4 billion years till it happens, average life expectancy = 75 yrs. Do I care, go figure why not.
Even if I count reincarnation thats a lot of lives and thats assuming the human race doesnt wipe itself out in 100 yrs.

They reckon our sun will be a red giant at that time, that Earth will be burnt away.

So many things to worry about :shock:
You are an immortal being, so stop freaking out about losing another body!

Conspirator
User avatar
Posts: 1383
Joined: Wed Dec 07, 2011 11:43 pm
Location: Flight 815

PostTue Jun 05, 2012 7:14 pm » by Jet17


Old news
Image
*View my post history under former usernames: JetXVII, Epicfailure, Slamgunshark*

DJ Jesus died for your Spins!

Master Conspirator
User avatar
Posts: 10110
Joined: Wed Jul 01, 2009 10:10 pm
Location: Packing my stuff and moving to Denver like you should be doing

PostTue Jun 05, 2012 7:28 pm » by Savwafair2012


Oh Check this out.

Its seems there is also another " Galaxy" heading this way

Image

In 2008, a cloud of hydrogen with a mass then estimated at about 1 million suns was found to be colliding with our galaxy (http://www.newscientist.com/article/dn1 ... alaxy.html). Now it appears the object is massive enough to be a galaxy itself.

Called Smith's cloud, it has managed to avoid disintegrating during its smash-up with our own, much bigger galaxy. What's more, its trajectory suggests it punched through the disc of our galaxy once before, about 70 million years ago.

To have survived, it must contain much more matter than previously thought, in order to provide enough gravity to hold it together. Calculations by Matthew Nichols and Joss Bland-Hawthorn of the University of Sydney, Australia, indicate that it has about 100 times the previously estimated mass (http://arxiv.org/abs/0911.0684)

Many more such dark galaxies may be out there (http://www.newscientist.com/article/dn1 ... omers.html), says Leo Blitz of the University of California, Berkeley. Simulations of galaxy formation suggest a galaxy the size of the Milky Way should feature about 1000 dwarf galaxies (http://www.newscientist.com/article/mg2 ... axies.html), but only a few dozen have been found so far. Some of the missing dwarfs may be dark galaxies that are all but invisible, he says.




dark-galaxy-crashing-into-the-milky-way-t12178.html
Image
FAIR USE NOTICE.
Section 107 of the US Copyright Law. In accordance with Title 17 U.S.C. Section 107, . http://www.law.cornell.edu/uscode/17/107.shtml

Conspirator
Posts: 1435
Joined: Thu Feb 19, 2009 9:06 pm

PostTue Jun 05, 2012 10:53 pm » by Mushroom


Savwafair2012 wrote:Oh Check this out.

Its seems there is also another " Galaxy" heading this way

Image

In 2008, a cloud of hydrogen with a mass then estimated at about 1 million suns was found to be colliding with our galaxy (http://www.newscientist.com/article/dn1 ... alaxy.html). Now it appears the object is massive enough to be a galaxy itself.

Called Smith's cloud, it has managed to avoid disintegrating during its smash-up with our own, much bigger galaxy. What's more, its trajectory suggests it punched through the disc of our galaxy once before, about 70 million years ago.

To have survived, it must contain much more matter than previously thought, in order to provide enough gravity to hold it together. Calculations by Matthew Nichols and Joss Bland-Hawthorn of the University of Sydney, Australia, indicate that it has about 100 times the previously estimated mass (http://arxiv.org/abs/0911.0684)

Many more such dark galaxies may be out there (http://www.newscientist.com/article/dn1 ... omers.html), says Leo Blitz of the University of California, Berkeley. Simulations of galaxy formation suggest a galaxy the size of the Milky Way should feature about 1000 dwarf galaxies (http://www.newscientist.com/article/mg2 ... axies.html), but only a few dozen have been found so far. Some of the missing dwarfs may be dark galaxies that are all but invisible, he says.




dark-galaxy-crashing-into-the-milky-way-t12178.html


I didn't know this. I have just checked the original thread and all the links seem to be valid, so thanks for the heads-up... I think :!:

Has there been any updates to this story to your knowledge?

Conspirator
Posts: 1435
Joined: Thu Feb 19, 2009 9:06 pm

PostWed Jun 06, 2012 10:08 pm » by Mushroom


Thanks for the reply sav :|

The smith's cloud is expected to collide in 27 Million Years... here's the pdf http://iopscience.iop.org/1538-4357/679 ... /22647.pdf

So nothing to worry about then.



  • Related topics
    Replies
    Views
    Last post
Visit Disclose.tv on Facebook