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22 Comments
- vbob, on 10/12/2007, -0/+1Sure, galaxies collide all the time. Good thing we're in a nice quiet neighborhood, for the time being. Property values will really go down when the Andromedans start moving in.
http://www.space.com/scienceastronomy/aas202_supernova_030527.html
http://csep10.phys.utk.edu/astr162/lect/galaxies/colliding.html
http://www.noao.edu/outreach/current/collide_hilite.html
http://www.space.com/scienceastronomy/aas202_supernova_030527.html - tralfamadore, on 10/12/2007, -0/+1yes it is true that the majority of galaxies are red shifted in respect to the Milky Way, but Andromeda is blue shifted, and scientists have found out that the milky way and andromeda are actually rotating each other. pretty cool if you ask me.
- cwcentral, on 10/12/2007, -0/+1"what happens to matter that gets spun off in the collision's wake?"
Wouldn't the more interesting question (for all of us) be:
What happens to the matter that collides?
Yes, I'm sure planets would get obliterated, but what survival (of humans let's say) rates exists? Gravity may not force a direct planet to planet collision for instance. - adml_shake, on 10/12/2007, -0/+1"its been proven that our galaxy is moving away from all nearby galaxies due to the expansion of the universe :-s I dont think the milky way and andromeda will collide ;)"
It's not the ones you know about you have to be careful of! It's those sneaky bastards that side swipe you from out of nowhere. - Scientific, on 10/12/2007, -0/+0ONE LAST THING!!
http://imgsrc.hubblesite.org/hu/db/2002/11/videos/a/formats/low_quicktime.mov
check this out..
Although stars don't collide when two galaxies merge, the much larger gas clouds do. The clouds in the two galaxies slam into each other violently. Shock waves from the collision run through the clouds and trigger the collapse of dark nebulae to form stars. Thus, if the two colliding galaxies are rich in gas, their merger will be accompanied by a burst of star formation. Stars collide with each other very rarely. The distance between neighboring stars (at our position in the Milky Way Galaxy) is approximately equal to 10 million times the diameter of a star. By contrast, galaxies collide with each other quite frequently. The distance between neighboring galaxies is approximately equal to 20 times the diameter of a galaxy.
To illustrate this difference, consider building a scale model of our galaxy in which the stars are represented by ping-pong balls. In this model, the distance between the Sun and Alpha Centauri will be 1100 kilometers (the distance between Columbus and Jacksonville, Florida). Now consider a scale model of the universe in which individual galaxies are represented by ping-pong balls. In this model, the Milky Way Galaxy and the Andromeda Galaxy will be a pair of ping-pong balls only 1 meter apart. - inactive, on 10/12/2007, -0/+0"aren't the chances of two stars/solar systems colliding(one from each galaxy) pretty low? think about it - each star system is separated by at least 5 - 10 light years on average."
Okay...but that doesnt mean they wont collide eventually...might take a few million years though - Elsan, on 10/12/2007, -0/+0rysolag said "aren't the chances of two stars/solar systems colliding(one from each galaxy) pretty low? think about it - each star system is separated by at least 5 - 10 light years on average."
- evizaer, on 10/12/2007, -0/+0I've seen many many stories and simulations of colliding galaxies, but this one looks cool enough to warrant a digg.
- rysolag, on 10/12/2007, -0/+0aren't the chances of two stars/solar systems colliding(one from each galaxy) pretty low? think about it - each star system is separated by at least 5 - 10 light years on average.
- kaplanfx, on 10/12/2007, -0/+0rysolag said "aren't the chances of two stars/solar systems colliding(one from each galaxy) pretty low? think about it - each star system is separated by at least 5 - 10 light years on average."
I don't know if that is an actual statistic, but even if it were true, there are still Billions of galaxies in the universe, so no, the chances are not "pretty" low. Also 5 - 10 light years is rediculously close, the nearest star system to us is only 4 light years away (alpha centauri) and again there are so many star systems in each galaxy and so many galaxy that it is likely happening all the time. - funderwood, on 10/12/2007, -0/+0Pretty cool if you ask me.
- Scientific, on 10/12/2007, -0/+0Galaxy collision is a natural occurrence in the universe. It is true that most galaxies are accelerating apart from one another. We are now staring to call this phenomenon dark energy. It refers to the speeding up of this expansion. However, in our local group of galaxies (Milky way, Large & Small Magellanic clouds, the Triangulum Galaxy and many others.. About 30 galaxies exist in our local group) this local group supports 30 galaxies within a 10 light year diameter. The largest of these are clearly the Milky Way and Andromeda. Andromeda being about 1 1/2 times larger, is on a slow but steady collision course with the Milky Way (it's moving at 186 miles per second) However, this collision won't actually be a collision at all.. Embracement is a better way to look at it... The two large spiral galaxies will merge and form a super elliptical galaxy. Many of the older red shifted galaxies we view through telescopes are elliptical as well.. So perhaps this is a fate of many large spiral galaxies. The effect of this merger on the Earth is unclear.. Although the galaxies do in fact "collide" there will be no collision between the stars in the two galaxies. However, the two theorized black holes at the center of these galaxies will likely merge and form a super supermassive black hole with billions upon billions of solar masses. All of this activity will like cause the black hole to began "feeding" again. The effect of all this activity will have a undetermined effect on the Earth. Due to the earth’s apparent location on the outer rim of the galaxy, the earth will most likely not be hurled into this super blackhole. However, there is a strong possibility that the gravity of a passing star in the merger will thrust the Earth out of the galactic system.. The Earth in this seniro would become a rouge world hurling through intergalactic space without a place to call home. This merger, in roughly 3 billion years is a greater threat in my opion than surviving our sun's red giant expansion in 5 billion years...
- ziffel, on 10/12/2007, -0/+0"aren't the chances of two stars/solar systems colliding(one from each galaxy) pretty low? think about it - each star system is separated by at least 5 - 10 light years on average."
Watch "The Complete Cosmos" on The Science Channel. It talks about galaxies colliding (meshing or blending might be a better word choice). and galaxies have been doing this since the beginning of time. We will indeed blend with andromeda in the future, but of course humanity will be long gone by then :)
We humans really think we are something special, but on a galactic scale, we're a blip on the radar, and will come and go in the blink of an eye (in the universal time frame). - dpk87, on 10/12/2007, -0/+0Galactic collision scheduled for 3 billion years from now. Set your clocks!
- chrbeam101, on 10/12/2007, -0/+0first of all galaxies are millions of light years from each other. and technically it would be very difficult to even got cloes to 1.
- vbob, on 10/12/2007, -1/+0That's right. I linked the same article twice because I liked it that much. Sheesh.
- clayasaurus, on 10/12/2007, -1/+0http://koolaidguy.blogspot.com/2005/12/why-diggs-non-hierarchical-editorial.html
I've mass dugg dominates the front page:
When Worlds Collide, Nice webdesign showcase Digg sauce, Review of the Web's First News Channel, auto-lock your computer on start-up, REVIEW: ATI's Newest Midrange Card (Radeon X1600 XT), Technology Enabled Leather Jacket, Using Math to Beat the Market, Want to go to the movies? Expect 20 minutes of advertising first., Huge collection of old propaganda.
This is a snap shot of the diggall page sorted by most diggs. Notice the next stories to be promoted are those that I have dugged.
This is obviously a serious design flaw in Digg and should be fixed immediately. I've come to the realize that this is the method that Albertpacino uses to get his stories onto the front page. In conclusion, Albertpacino is a tool should be banned. - Cerberus047, on 10/12/2007, -1/+0as long as my pc is safe....
- secretivecoward, on 10/12/2007, -3/+0"each star system is separated by at least 5 - 10 light years on average."
and so are britney spears and kevin federline...zing! - BugMeNot2, on 10/12/2007, -3/+0Spongebob Squarepants!
- BugMeNot2, on 10/12/2007, -3/+0
- Elsan, on 10/12/2007, -3/+0
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