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Andromeda Devouring Neighbor Galaxy

Scientific Ninja writes "Astronomers in the University of Sydney have captured pictures of a 'union' between our closest neighboring galaxy, Andromeda, and its smaller neighbor, the Triangulum Galaxy. Published in the journal Nature on September 3rd, the research shows how large galaxies grow by incorporating stars from surrounding smaller galaxies. This popular model of galaxy evolution, called the 'hierarchical model,' predicts that large galaxies such as Andromeda, which can be seen with the naked eye from the northern hemisphere, should be surrounded by relics of smaller galaxies it has connected with."

7 of 60 comments (clear)

  1. Hail! by lorg · · Score: 4, Funny

    I for one welcome our new carnivorous galaxy overlords ... or whatever that other puny galaxy is made out of.

    But perhaps it's just some twisted form of galactic Darwinism, the weak die (or get consumed or whatever) while the big and buff galaxies prospers.

    Alternativly perhaps space isn't even really endless at all but instead quite finite and Andromeda just needed some galactic lebensraum?

  2. Just a few questions by davidwr · · Score: 3, Funny

    1) is the takeover hostile or friendly
    2) if it happened in this galaxy would it be subject to regulatory approval, and if so, under whose jurisdiction?

    --
    Knowledge is how to play a game, intelligence is how to win, wisdom is knowing what game to play.
  3. Re:Not quite by Anonymous Coward · · Score: 3, Informative

    Was that intended as a joke?

    +1 Funny

  4. Gravity wave spectrum by PPH · · Score: 3, Funny

    ... looks remarkably similar to a belch sound.

    --
    Have gnu, will travel.
  5. Re:Shrinkage by Citizen+of+Earth · · Score: 3, Funny

    the universe will just be a bunch of black holes slowly oozing out Hawking radiation. Very bleak.

    That's why I plant to commit suicide on my 99-trillionth birthday.

  6. xscreensaver knows how this will end by Jon+Abbott · · Score: 5, Funny

    I know from watching the xscreensaver 'galaxy' that these galaxies will both destroy each other. That is almost always how it happens in the screensaver, so it must be that way in real life.

  7. Re:Shrinkage by Planesdragon · · Score: 3, Insightful

    This is local. What's happening on a global (ok, universal) scale is that the universe is expanding and after 100 trillion years all the hydrogen will be used up and there will be no more stars (or at least very few of them) and 10^whatever years after that the universe will just be a bunch of black holes slowly oozing out Hawking radiation. Very bleak.

    So says the species that still thinks there is "Dark matter" and "dark energy" out there somewhere.

    Physicists don't like to dwell on this point when summarizing what their research accomplished, but we really don't know enough to be definitive about how the universe will evolve. To wit: our LOCAL time-cone appears to be expanding, and if (1) this observation is correct, (2) the universe is homogenous to our time-cone, and (3) there isn't some exterior force pushing us together, then we'll all wind up in a cold death in the end.

    For all we know, the vacuum of space might just have a slight red-tint to it, causing this "red-shift" that makes us think the universe is expanding. It's not like we have rulers or anything.