Question:

Has our EARTH been in other galaxies?

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why not?

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13 ANSWERS


  1. No, because the gravity is to great.


  2. I'm no expert on such matters but i'm pretty sure it hasn't.

  3. The quick answer is no.  Most other galaxies are too far away and relatively slowly moving to even think that our solar system was part of them.  There are some dwarf galaxies that have crossed through the Milky Way (our galaxy) in the past, exchanging some stars with the Milky Way in the process.  But I don't think our solar system, including Earth was ever part of that exchange, though I would have to do some research to be sure.

  4. Short answer: no.

    Long answer: Maybe, but probably not. It is possible that it has been.  For a long time, scientists have wondered why the solar system is tilted relative to the rest of the galaxy.  Now some theorize that the reason is that we originated in another galaxy called Sagittarius Dwarf Elliptical Galaxy, which is oriented at the same angle as our solar system.  This small galaxy started being swallowed by our own Milky Way about 2 billion years ago.  Our solar system and planet are about 4.5 billion years old.  If we really did originate in Sagittarius Dwarf, the solar system actually originated there and was later captured by the gravity of the Milky Way.  The solar system remained completely intact during this transfer between galaxies, which would have taken place slowly over the course of 100's of millions of years.

    Of course, this is just a hypothesis, and many scientists disagree with it!  (I, personally, disagree with it.  I think it's unlikely and that there are other explanations for the tilt of our solar system.  I still recognize it as  a valid hypothesis, though.)  No one has any conclusive evidence to disprove it either.  That's what science is about: making hypothesis and then testing them.  The only evidence we have is the apparent tilt of the solar system relative to these other galaxies, and our knowledge of what happens when one galaxy captures a smaller one.  So it is possible, but not very likely, that the earth has been in another galaxy.

    In addition, other scientists have some evidence that some material that eventually formed our earth and solar system actually came from another galaxy long ago.  That's not really the same as the Earth being in another galaxy, though.

  5. heard of mario galaxy for the wii? so yes

  6. I suppose that it is possible that our part of the Milky Way passed through another galaxy at one time; but not during my lifetime

  7. C.R.E.A.M.: I would have to go out on a limb hear and say, nope, nada, zero, zilch, never has happened but the milky way galaxy will someday smash into Andromeda galaxy, so some time in the future yes.

  8. No earth was only in the Milky Way.

  9. wtf? your question doesn't make sense...maybe before it was formed when the universe was in complete chaos...the earth was created by loose rocks and materials bumping into each other that came from different places...so in that aspect yes. But once it was formed ..no...silly question

  10. No.  Around 5 billion years ago, some stars exploded (nova or supernova) and blasted their matter into space.  This dust and gas had gravity, as does all matter, and its gravity caused the clouds to collapse around 4.5 billion years ago.  Some of the cloud formed the sun, and some of it formed the planets.  The solar system, including the earth, orbits around the center of the galaxy, but does not move from one galaxy to another.

  11. Nope.

    Earth isn't old enough to have gotten from on to another.

  12. no. the earth stays in place because of the gravity but there is a possibility it can in many years

  13. No.

    Because other galaxies are extremely far away:

    -- It takes far too much time to get there.

    -- There is nothing to take Earth here, from over there, and allow us to remain in a nice circular orbit around the galactic core.

    The question is similar to asking if North America has ever been on different planets.  

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