I propose $3 billion dollars to study transgenderism in the Andromeda Galaxy.
Careful! A combination of the Andromeda galaxy and our Milky Way galaxy could all too easily be called the "AndroMilk" galaxy. That might make the proponents of replacing breastfeeding with chestfeeding and those who think men get pregnant very happy.
We always knew it was blue-shifted. But only recently they figured out its lateral motion. It's not going sideways at all.
Unless someone here has any bright ideas, in a few billion years it will smash right into the Milky Way. They already call it the Milkomeda Galaxy, and it's gonna be an ugly, shapeless globular blob, unlike the beautiful spirals we currently have.
Thank goodness! I always thought it was a few million.
Everything is mostly empty space. If a bar of lead smashed into a bar of uranium, the only thing stopping them from mixing together is that nuclear forces are strong over that empty space between the atoms and particles. Very strong!
Gravity is not as strong, but galaxies can still smash into each other, the way semi-liquid things like oatmeal or fresh rhinoceros turds could. And the result will be even more ruinous than that.
Words have meanings and not anything can be anything. There is no shattering or any change in shape of stars, planets or other macro bodies (or for that matter their atomic constituents) involved and there isn’t any contact or consequent momentum transfer between them. I define a smash as involving at least some or all of the above.
The fluid analogy is both irrelevant and also does involve collision-driven momentum transfer between particles unlike galaxy mergers. Galaxies are way sparser than solid or fluid matter.
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