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McCartney
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If the galaxies are moving away from each other.
jedishrfu said:overall the galactic trend is moving away but that doesn't mean thatindividual galaxies can't be gravitationally attracted and collide.
McCartney said:If the galaxies are moving away from each other.
julcab12 said:We have a few things going on. All galaxies interact gravitationally with each other and rotate. Close pairs of galaxies are bound by the gravity of the dark matter surrounding them, drawing them together and resisting the expansion. As it happens, our own galaxy, the Milky Way, finds itself in a close pair having a approximation of each radial and transverse velocities, masses of both, rotational curve to be on collision using a predicting methods like Newtons second law in solving a 2 body problem, timing argument and dynamical systems for simulations.
McCartney said:Two cars collide in an instant. I assume this collision will take 1-2 million years. Will there be any humans left to observe this? Or should I say whatever we evolve into?
It is hard to accept that all the cumulative knowledge of MAN will be gone.
mathman said:When the Andromeda Galaxy and our Galaxy "collide" there will be little or no chance of our solar system hitting anything. There is an awful lot of empty space between stars! There will be global gravitational effects, but locally it won't be noticed.
Mordred said:Wish granted
heres one specifically on the milky way and Andomeda
http://www.galaxydynamics.org/tflops.html
McCartney said:I assume the Earth will be dry by them due to the swelling of the dying sun. How will future generations cope with these catastrophic events?
Mordred said:Wish granted
heres one specifically on the milky way and Andomeda
http://www.galaxydynamics.org/tflops.html
Darwin123 said:Don’t worry. The chances of mammals reaching that point are very small.
The following link lists some of the possible ways that the world will end before that time.
http://en.wikipedia.org/wiki/Future_of_the_Earth
The way things look now, I have series doubts about our species lasting even a thousand years. Think of it like that. What will the world be like one thousand years from now?
Global warming and other environmental problems will take precedence in my value system. How can someone worry about what happens four billion years from now and not worry about what may happen in one hundred? Or in fifty?
Life on Earth started with thermophilic bacteria and it may very well end with thermophilic bacterial.
Mordred said:Considering as I live in Canada maybe by the time I die I'll be living in the new tropics
Really? Do you have any idea how much has happened in the last 4 billion years?McCartney said:I think we will evolve into some other species and they will talk about us as their ancestors. No different than we talking about the chimps.
Darwin123 said:The current candidate for most recent common ancestor between human beings and chimpanzees is Ardipithicus, which lived about 16 million years ago.
Out of the millions of extant species on earth, maybe about four were present about 400 million years ago. I am not even sure these are species. These may be larger taxons.
There are very few species of animals or plants at our level of complexity that remain after 10 million years. There isn't a single species of animals that formed 550 million years ago that has remained alive to this day.
I am not trying to be pessimistic. Maybe some version of the human mind will exist 4 billion years ago. However, there will be a lot of trials until then. If any organism remotely analogous to us survives that long, then it will have survived numerous trials of equal intensity to the expanding sun. We probably won't be able to survive nearly that long without branching out to other star systems. In this case, we will have probably colonized several newly formed stars that could last another billion years.
At that point, the expansion of our sun won't even appear like an inconvenience.
Mordred said:By the time the death of the sun comes about we wouldn't even recognize the technology we could achieve by then.
As far as global warming their are developed ways which we can feasibly remove the excess CO2 levels. One method involved lifting nutrients from
the Ocean floor encouraging
the growth of algea. Which like
plants thrive on CO2. Their is
a couple other expensive
methods. One reason why
those arent in operation is th
at they are still studying the
impact it would have. However we do have the tech to reduce CO2 levels.
You seem to sell human ability short. We are highly adaptable. I have no doubt that one day we will leave Earth and colonize other planets. Despite all the
challenges. Hopefully we take the lessons we leaned in Earth with us so we don't make the same mistakes.
Given enough warning and time to prepare Mankind will survive.
mathman said:There will be global gravitational effects, but locally it won't be noticed.
DrStupid said:The gravitational effects will result in starbursts followed by a firework of supernovae. Oort clouds will be destabilized resulting in an increased number of comets. Planetary systems will cross protostellar clouds, nebulae or Oort clouds of other stars. The central black holes will cross areas with high matter density turning temporarily into quasars. Finally the black holes will merge.
I think this would be noticed locally if there is still somebody left.
The Andromeda galaxy is not actually heading towards us. It is simply moving towards us due to the expansion of the universe. This movement is very gradual and will take billions of years to result in a collision.
When Andromeda collides with our galaxy, there will not be a head-on collision. Instead, the galaxies will pass through each other and the stars within them will not collide due to the vast distances between them. However, the gravitational force between the two galaxies will cause them to merge into one larger galaxy over time.
The collision with Andromeda is not expected to have any significant impact on life on Earth. The distance between stars is so great that it is unlikely any planets or solar systems will be affected. Additionally, the collision is not expected to happen for billions of years, so it will not impact current life on Earth.
No, there is nothing we can do to prevent the collision. The movement of galaxies is governed by the laws of physics and cannot be altered. However, there is no need to worry as the collision is not expected to happen for billions of years and will not have a significant impact on our daily lives.
Yes, we will be able to see the collision from Earth. However, it will happen over a very long period of time and will not be a sudden event. The merging of the two galaxies will result in a beautiful display of new stars and formations, but it will not be visible to the naked eye and will require advanced telescopes to observe.