5
$\begingroup$

Most astronomers say it is likely to happen. Is this true? Are there any scientists that reject this?

$\endgroup$

migrated from physics.stackexchange.com Jul 19 '17 at 4:57

This question came from our site for active researchers, academics and students of physics.

  • 3
    $\begingroup$ Are you suggesting astronomers are not scientists? $\endgroup$ – ZeroTheHero Jul 19 '17 at 1:25
  • 3
    $\begingroup$ There are, I'm sure, scientists that are not even aware of, and likely are completely uninterested in, the question of whether or not Andromeda and the Milky Way will collide. $\endgroup$ – Alfred Centauri Jul 19 '17 at 1:26
  • $\begingroup$ I'm voting to close this question as off-topic because it's a political question $\endgroup$ – Carl Witthoft Jul 19 '17 at 13:47
  • $\begingroup$ It's not, that is a paranoid assumption, such an insinuation would be perfidious. it is clearly a slightly vague and unfocused phrasing. the question is obviously about measurement of galaxy motions, and it's a good question. $\endgroup$ – com.prehensible Jul 20 '17 at 20:04
  • $\begingroup$ read the study, awesome link. it's a balance of transverse and perspective motion, to know it's trajectory. always a good excuse to see this image of the future sky: phenomena.nationalgeographic.com/files/2015/03/… $\endgroup$ – com.prehensible Jul 20 '17 at 20:08
8
$\begingroup$

Relatively high-resolution measurements were made with the Hubble Space Telescope over a 8 year period. From these measurements, astronomers determined that the collision was a certainty. It is predicted to occur in about 4 billion years. I suppose there may be some astronomers who disagree with the measurements or calculations but I can find no mention of that. The results were reported in an article in "Nature" (http://www.nature.com/news/andromeda-on-collision-course-with-the-milky-way-1.10765#/b1) and published in "Astrophysical Journal" Both are well-respected publications. The "Astrophysical Journal" reference is below.

Sangmo Tony Sohn; Jay Anderson; Roeland van der Marel (Jul 1, 2012). "The M31 velocity vector. I. Hubble Space Telescope proper-motion measurements". The Astrophysical Journal. doi:10.1088/0004-637X/753/1/7.

$\endgroup$
  • $\begingroup$ Just added them to answer. $\endgroup$ – jmh Jul 19 '17 at 13:16
  • $\begingroup$ Here's a nice little "You Tube" explaining how Hubble observations showed that it is coming right for us: youtube.com/watch?v=r8YQsFZyGzw $\endgroup$ – Jack R. Woods Jul 25 '17 at 5:22

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.