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New study casts doubt on the likelihood of Milky Way collision with Andromeda
- braiamp 1y agoIt only cast doubts in the time frame. Everything in our local region will merge eventually.
- ednite 1y agoGood point. With my limited understanding of the cosmos, collisions are inevitable, when they happen depends on which rock you're standing on and how long you're willing to wait. It's comforting to know scientists are out there, keeping an eye and ear on things.
- mensetmanusman 1y agoNow that you say that, I should cancel my jewelry insurance!
- jvm___ 1y agohttps://youtu.be/uD4izuDMUQA?si=UMD-FBpBNroELCKE https://youtu.be/uD4izuDMUQA?si=UMD-FBpBNroELCKE This video explores what's predicted to happen in the future of the universe. The speed of time passing doubles every 5 seconds. And the video is almost 30 minutes long.
- chasil 1y agoHow long does Triangulum take? https://science.nasa.gov/asset/hubble/the-fate-of-the-milky-way-andromeda-and-triangulum-galaxies/ https://science.nasa.gov/asset/hubble/the-fate-of-the-milky-...
- gnabgib 1y agoRelated: Milky Way may escape fated collision with Andromeda galaxy (9 points, 10 months ago) https://news.ycombinator.com/item?id=41240641 https://news.ycombinator.com/item?id=41240641 Milky Way and Andromeda galaxies are already merging (2020) (138 points, 2022, 74 comments) https://news.ycombinator.com/item?id=30494523 https://news.ycombinator.com/item?id=30494523 Our Dazzling Night Sky When the Milky Way Collides with Andromeda in 4B Years (182 points, 2019, 120 comments) https://news.ycombinator.com/item?id=21327269 https://news.ycombinator.com/item?id=21327269
- spenczar5 1y agoI could have told you in advance it would have been a Finn! Something in Helsinki has been going on for a while in astronomy. They're so much more willing to challenge the norm, and unusually capable with Bayesian statistics and big computation. It's really remarkable.
- lisper 1y agoDamn, I was really looking forward to seeing Andromeda up close. Oh well.
- chopin 1y agoThe entire luminosity of Andromeda will be dispersed over a much wider angle. It'll be much less spectacular than one might think. It won't be brighter than what we see today.
- lisper 1y agoYeah, that was meant to be a joke. Even if we were to collide, it wouldn't happen for a few billion years. Our sun will be a red giant by then. Earth will no longer exist.
- didgetmaster 1y agoWhen simulating an actual merger with the two galaxies; any estimates on the number of stars that might collide? 400+ billion stars per galaxy might make each one seem 'dense' but the distance between stars is enormous. I have heard that it might be possible for one galaxy to pass through another without any stars colliding with each other. I don't have any idea if that is actually true.
- banana_giraffe 1y agohttps://web.archive.org/web/20140701085917/http://www.nasa.gov/mission_pages/hubble/science/milky-way-collide.html https://web.archive.org/web/20140701085917/http://www.nasa.g... : > Although the galaxies will plow into each other, stars inside each galaxy are so far apart that they will not collide with other stars during the encounter. However, the stars will be thrown into different orbits around the new galactic center. Simulations show that our solar system will probably be tossed much farther from the galactic core than it is today.
- raverbashing 1y agoVery low probability times massive number of stars: yes I think there will be a non-zero number of actual collisions
- bruce511 1y agoYou are confusing one big number with another big number, and treating them as the same. Yes there are a lot of stars. It's a big number. But there's a lot of space. That's a number that's in a whole different league. For example, the whole solar system is about 2 light-day diameter. But it's 4 light years from the nearest star in any direction. Empty space is thus many orders of magnitude more than solar systems, never mind suns. Sure there's a probability of a collision. But even multiplied by the number if stars, it's still really tiny.
- raverbashing 1y ago
- block_dagger 1y agoCollide? No; merge.
- aurareturn 1y agoThey will collide then merge eventually.
- ChocolateGod 1y agoI guess it depends whether you consider the space between stars as part of galaxy, in which case they're both colliding and merging.
- anshumankmr 1y ago>If the Milky Way and Andromeda are to collide and merge, the researchers found that it would most likely happen in 7 to 8 billion years’ time, significantly later than previously predicted. Aah damn well let me check my calendar for what I'll being doing in 7 billion years instead of 4...
- syspec 1y agoI think the significance is the the sun will actually have engulfed the earth by that time
- lIl-IIIl 1y agoThe article: >Such a collision would be devastating for both galaxies which would be destroyed, leaving behind a spheroidal pile of stars known as an elliptical galaxy. https://en.m.wikipedia.org/wiki/Andromeda%E2%80%93Milky_Way_collision https://en.m.wikipedia.org/wiki/Andromeda%E2%80%93Milky_Way_...: >The stars involved are sufficiently spaced that it is improbable that any of them will individually collide,[6] though some stars will be ejected. Originally I thought thought those statements were contradictory, but I guess the first statement says the galaxies will be destroyed, and says nothing of the stars.
- GoblinSlayer 1y agoMuh spiral shapes.
- snickerbockers 1y agoIt's like when your boss calls an emergency meeting to go over the latest company-wide BU reorganization like it's absolute pandemonium but you're just sitting there thinking about how you get paid the same salary to perform the same job with the same colleagues under the direction of the same manager. The total destruction of our entire galaxy is just that but in space.
- exe34 1y agoPerfect analogy! I've sat through about 5 restructures already and I swear they use musical chairs to decide who's doing what this time around, while having no impact on my life whatsoever.
- elihu 1y agoI was in a startup that was acquired by a big tech company and it went about like that. They made us use Windows for email and "business stuff". I continued to do all my real work on a low-budget Frankenstein computer under my desk that I think I was supposed to relinquish but I wasn't going to say anything and no one asked.
- vikingerik 1y ago
- tekla 1y ago12yos before this article: https://www.youtube.com/watch?v=y_PrZ-J7D3k https://www.youtube.com/watch?v=y_PrZ-J7D3k
- svachalek 1y ago> Such a collision would be devastating for both galaxies which would be destroyed, leaving behind a spheroidal pile of stars known as an elliptical galaxy. Where the heck did this sentence come from, especially on a university website?! Is it AI slop or did a human actually write this?
- adamgordonbell 1y agoOh no, a plot hole for Alastair Reynolds revelation space series.