It seems inconceivable to me that there aren't millions of other "things" that are existing or did exist out there.
Twas good this! Seen a few of these over time but this did a good job of trying to keep scale as it crept up. Did think though was a bit random to start including distances in relation to size (E.g. Distance of a Light year, One Parsec) but did find the one surpising about the number of Human stacked being larger than the Star(!). And a chillingly good representation of the beyound-the-observable univerise But I agree, Impossible surely for there not to be something else; but perphas so far away we'll never ever know.
Note the Schwarzschild radius of a human at the start, that's the radius of a person when we are collapsed into a personal black hole (I note it did mention that at the bottom but it flew past)
People misuse the parsec so often particularly George Lucas in Star Wars, it's a bleedin distance measurement not a measurement of time, that one mistake made me hate Star Wars right from the beginning I used to argue with my friend Smithy about this beating him over the head with 'the distance at which the radius of the earth's orbit subtends one arcsecond of angle' 3.26 light years. 7 billion people average height 1.6 metres maybe that's 11.2 billion metres or 11.2 million kilometres, their estimate was a bit high at 13 million kilometres. I disagree with the observable Universe fade out, that plays to the notion that space expands into something that is already there and that is not what the observable Universe is. The observable Universe is bound by the time needed for light (information) to reach us from any other point in the Universe, the boundary is defined as the distance at which space is expanding faster than the speed of light therefore no light beyond that can ever reach us, all light on that boundary has been travelling towards us since just after the universe became transparent to light a few hundred thousand years after the big bang and when we observe that boundary we are observing events that happened almost 14 billion years ago, we are not observing now. During the big bang space and time came into existence neither existed before that moment, the expansion is not expanding into anything it is an expansion of space itself, so there is no outside of the Universe in that sense. The parts we can't see are still part of the big bang but they were far enough away that light travelling in the expanding space can never reach our region. edit: the possibility of bang bubbles forming off of our Universe and other Universes is quite possible however in which case we are a 4 dimensional Universe framed in a higher dimension multiverse. It is also possible that the space we exist in will be shredded in a big rip if the expansion of space continues to accelerate, as time goes by the observable Universe shrinks as more and more of it passes the event horizon. Now you might thing it odd to mention event horizons but that is what the edge of the observable Universe is, a horizon beyond which we can never know anything, indeed some aspects of the Universe potentially imply that we are living inside something akin to a Black hole.
