Url changed from <a href="http://www.nytimes.com/video/science/100000002906469/colliding-galaxies.html" rel="nofollow">http://www.nytimes.com/video/science/100000002906469/collidi...</a>, which points to this. In general HN prefers text to video.
FWIW, this result came out in 2012[0,1]. This NYT piece seems like it's just trying to use the non-event of the Swift/BAT detection[2] in M31 with with some other random M31 information to make a story. Unfortunately, there's not any new information in this NYT piece.<p>[0] (Nature summary of results) <a href="http://www.nature.com/news/andromeda-on-collision-course-with-the-milky-way-1.10765" rel="nofollow">http://www.nature.com/news/andromeda-on-collision-course-wit...</a><p>[1] (preprint of results) <a href="http://arxiv.org/abs/1205.6865" rel="nofollow">http://arxiv.org/abs/1205.6865</a><p>[2] <a href="http://science.slashdot.org/comments.pl?sid=5211327&cid=47107299" rel="nofollow">http://science.slashdot.org/comments.pl?sid=5211327&cid=4710...</a>