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Cake day: June 12th, 2023

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  • Because neutrons are what you get when an electron and a proton love each other very very much…

    What occurs to me now that you put it that way, is from way back during the very early days of galactic formation, when so much hydrogen gas got blasted by radiation (was that caused by Population I stars?), stripping the electron away and leaving most of the hydrogen ionized - a fancy way of saying “lone protons floating in space”.

    Now what would happen if some ionized hydrogen clouds happened to collapse into massive stars during this window of time, before the universe became re-ionized? Massive stars with mostly protons and very few electrons?

    Is this a valid hypothetical object? Then if it collapses under it’s own proton weight, where are you going to get the electrons to merge with the protons to transform into neutrons?



















  • Thank you! You got what I was trying to ask, but I didn’t know exactly how to put it into words.

    Put another way, now that you have landed on the number I was missing:
    Each elastic yardstick of 41 million light years, has stretched to 45.5 billion light years, and it took 13.7 billion years to do it. Trying to visualize this type of abstract math borders on the surreal.
    EDIT: maybe something like this famous dolly zoom?

    But wait, there’s more…!
    I’ve heard it said often, in print and video, that inflation took the universe from subatomic size to the size of an orange, or to the size of the solar system, or even several light years, in an instant. That’s quite an error range in the narratives.

    But when the CMB flashed, what we call the visible universe was barely 380,000 years old, but already 41 million light years across. And the geometry of it seems flat, so if it is actually curved, it must be have been gigantically larger than that already.

    Like I said, trying to visualize this borders on the surreal for a fragile primate mind barely out of the grassy steppes, in a much more placid place and time of the life of the cosmos.




  • niktemadur@lemmy.worldto196@lemmy.blahaj.zoneRule
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    2 months ago

    Last seen in 1980

    Right around the time when the so-called “greatest” generation and the silent generation electorally told liberal Democrats to go fuck themselves and die, over several consecutive elections in which the baby boomers sleepwalked just like all the non-voting idiots of today.