Harish Kumar.A Posted June 2, 2012 Posted June 2, 2012 Hello friends, Milky way galaxy and Andromeda galaxy is going to collide after 4 billion years which may or may not destroy the solar system. I haven't got much information about this.So how did NASA predict this??
A Tripolation Posted June 2, 2012 Posted June 2, 2012 (edited) ...it's not that it will end, precisely. Anyways, in 4 billion years the Solar System will be unrecognizable as the Sun will start engulfing the inner planets as it expands into a red giant. In galactic "collision," stars/planets almost never collide. There is simply too much empty space. What does happen, however, is that the gravitation will get all wibbly-wobbly as these stars come into "close" contact with each other, and the general shape of the Milky Way will change. Here's a good picture of some galactic collisions/interactions. Edited June 2, 2012 by A Tripolation
Harish Kumar.A Posted June 2, 2012 Author Posted June 2, 2012 ...it's not that it will end, precisely. Anyways, in 4 billion years the Solar System will be unrecognizable as the Sun will start engulfing the inner planets as it expands into a red giant. In galactic "collision," stars/planets almost never collide. There is simply too much empty space. What does happen, however, is that the gravitation will get all wibbly-wobbly as these stars come into "close" contact with each other, and the general shape of the Milky Way will change. Here's a good picture of some galactic collisions/interactions. Well why can't there be a possibility of colliding solar system?? Look at this example in a window there are so many spaces and there are some rims in a window.so spaces are more than objects.So we should tie our eyes and hit it with stone.Out of 100 tries 99 will fall in space and 1 will sometimes will hit that object.It can also happen that 100 tries and 100 did not hit that object.But there is a possibility that it will hit.
ACG52 Posted June 2, 2012 Posted June 2, 2012 The average distance between stars in our area of the spiral arm is about 5 light years apart. Add in another galaxy worth and you have about 2.5 light years apart, plenty of room. 1
alpha2cen Posted June 2, 2012 Posted June 2, 2012 Till when have Milky way galaxy and Andromeda galaxy had their own mass? And, when they have attracted each other?
A Tripolation Posted June 2, 2012 Posted June 2, 2012 Till when have Milky way galaxy and Andromeda galaxy had their own mass? And, when they have attracted each other? I'm fairly certain they've had their own mass as long as they've had stars. They are both in our local cluster, so, again, I'm fairly certain they've been attracting each other for a very long time. There's a lot of distance to cover.
Phi for All Posted June 2, 2012 Posted June 2, 2012 Well why can't there be a possibility of colliding solar system?? No one said there's no possibility.
TransformerRobot Posted June 2, 2012 Posted June 2, 2012 ...it's not that it will end, precisely. Anyways, in 4 billion years the Solar System will be unrecognizable as the Sun will start engulfing the inner planets as it expands into a red giant. In galactic "collision," stars/planets almost never collide. There is simply too much empty space. What does happen, however, is that the gravitation will get all wibbly-wobbly as these stars come into "close" contact with each other, and the general shape of the Milky Way will change. Here's a good picture of some galactic collisions/interactions. So we're not hopelessly doomed to destruction of our galaxy?
A Tripolation Posted June 3, 2012 Posted June 3, 2012 So we're not hopelessly doomed to destruction of our galaxy? Well, it won't be the Milky Way anymore, if that's what you're asking. 1
ACG52 Posted June 3, 2012 Posted June 3, 2012 Well probably end up with a globular galaxy, instead of the spiral we now have.
TransformerRobot Posted June 3, 2012 Posted June 3, 2012 Well probably end up with a globular galaxy, instead of the spiral we now have. You mean it will be a massive sphere?
Ben Banana Posted June 3, 2012 Posted June 3, 2012 You mean it will be a massive sphere? He means it will be a massive glob of stars. That's like a sphere. Yes. Where's the misunderstanding? So we're not hopelessly doomed to destruction of our galaxy? Well... 4 billion years anyway. With concerns towards humanity, we could become extinct in just a matter of millennia. -1
the asinine cretin Posted June 3, 2012 Posted June 3, 2012 http://hubblesite.org/newscenter/archive/releases/2012/20/video/c/ 2
alpha2cen Posted June 3, 2012 Posted June 3, 2012 How do we assume past history of Milky way galaxy and Andromeda galaxy?
the asinine cretin Posted June 3, 2012 Posted June 3, 2012 I recommend my links above. Here are papers related to the recent merger press release if that's what you're curious about. http://hubblesite.org/newscenter/archive/releases/2012/20/related/
pantheory Posted June 4, 2012 Posted June 4, 2012 (edited) This is a rehash and confirmation of previously known information, based upon the long-time observed blue shift of Andromeda galaxy. I wouldn't fret about it, however. It is known that stars are so far apart in galaxies in general, that stellar collisions seem to be uncommon in such galactic interactions based upon present observations of such events. By that time humans, if they still exist, will have most certainly both planet hopped and stellar hopped because of the expanding sun. Talk about global warming. Also such ideas are based upon current mainstream interpretations of redshifts and related understandings which are not necessarily correct. Edited June 4, 2012 by pantheory
Polak Posted June 8, 2012 Posted June 8, 2012 In my opinion it could happen, but after many years. I'm not sure is it will be destuction, i think that theses galaxies could mix. P.S. Sry for my english
Anders Hoveland Posted June 9, 2012 Posted June 9, 2012 The white race will not even be around in 200 years, let alone 4 billion years. Why exactly should I care again? -7
pantheory Posted June 9, 2012 Posted June 9, 2012 (edited) Andres, The white race may be cool but the all of humanity is far cooler Humanities intellect is what it's all about in my opinion. What do you think? Edited June 9, 2012 by pantheory
imatfaal Posted June 9, 2012 Posted June 9, 2012 ! Moderator Note Anders. That's totally off-topic and completely unfounded. Please do not continue that line of argument within this thread. You can report this post or PM me (or any other member of staff) if you believe this message/action is inaccurate or unjustified. 3
Tobias Andersson Posted June 19, 2012 Posted June 19, 2012 ~4-5 billion years from now seems to be a common denominator for a variety of events, given that the sun goes out and becomes a red giant while at the same time the earth's interior magma decreases. You could say that the human race are beyond condemned, unless we somehow manage to travel outside our galaxy.
space noob Posted July 8, 2012 Posted July 8, 2012 It won't be a sudden crash, this will take quite a long time to happen but earth won't be here then so don't worry, there's a very good chance though that our solar system will reach Andromeda and not be harmed at all, It's fairly comprehensible that there will be far more objects around during collisions which could result in a few things getting destroyed but nothing catastrophic The doppler effect and the observations of Andromeda so far, contribute to being able to calculate it's path towards the milky way, We live in a galaxy where we know everything we see is receeding,but then we see Andromeda, instead of getting further away actually ends up on a crash course with us, I think it can only be a good thing, right now the galaxy is 13.7 billion years old, it's also the amount have time it has taken us to become this advanced species on this little blue and green perfect rock, only hopes of more life being in Andromeda or in the milky way would be spectacular, because the way I see it, it could just be the Milkyway and Andromeda drifting alone forever through space
ACG52 Posted July 8, 2012 Posted July 8, 2012 We live in a galaxy where we know everything we see is receeding Only things that are at least 200 million lys from us. Closer than that things are gravitationally bound. That's why Andromeda can approach the Milky Way.
space noob Posted July 8, 2012 Posted July 8, 2012 (edited) Only things that are at least 200 million lys from us. Closer than that things are gravitationally bound. That's why Andromeda can approach the Milky Way. I didn't know that, thanks for that interesting piece of information So will everything within the 200m ly's eventually become one big galaxy maybe? Edited July 8, 2012 by space noob
Tor Posted August 7, 2012 Posted August 7, 2012 (edited) The sun and its remaining planets likely won't collide, but their orbits will be so strongly perturbed that the resulting galaxy won't look anything like our current spiral. With the spiral galaxy, orbits are fairly orderly - stars around us are more or less moving with us in our journey around the galaxy. After the "collision", things will be different, with much more randomness in their orbits around the galactic center. Right now we are in a low-density area of the galaxy. After collision, who knows - we could end up going through some high density areas where planets are often removed from their orbits around stars. However, if we manage to survive that long, that means we will have become a space-faring society, and will no longer be tied to any particular planet. In fact, Earth will have long been destroyed, so long before such a collision occurs we'll be living in the vicinity of some other rocky materials. Edited August 7, 2012 by Tor
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