NASA astronomers 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 change drastically 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.
The science team that did the investigation is led by Principal Investigator R.P. van der Marel (Space Telescope Science Institute [STScI], Baltimore, Md.), and further consists of S.T. Sohn and J. Anderson (STScI), G. Besla (Columbia University, New York, N.Y.), M. Fardal (University of Massachusetts, Amherst, Mass.), R.L. Beaton (University of Virginia, Charlottesville, Va.), Thomas M. Brown (STScI), P. Guhathakurta (UCO/Lick Observatory, University of California, Santa Cruz, Calif.), and T.J. Cox (Carnegie Observatories, Pasadena, Calif).
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Hi Rashid, I don’t think that the Milky Way and Andromeda merger in 2 billion years will be the next major cosmic event that Earth will experience. I am sure between then and now we will witness supernovas, asteroid collisions, and humanity on multiple planets in multiple solar systems.
It is interesting, however, to speculate on what happens when 2 galaxies collide. Would we here on Earth, should we still have a habitable planet at that time, even notice?
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