I took this photo of sunset on orbit during Expedition-30 to the ISS using a fisheye lens. It takes 7 ½ seconds for the disk of the sun to slip below the horizon. It goes from bright daytime lighting to dark night lighting in about twice this time. There is no extended twilight on orbit. On Earth, it takes 2 minutes for the solar disk to set where our atmosphere, acting as a light buffer, gives extended twilight.

More astrophotography can be found on my Instagram and Twitter accounts.

> It seems like multiple universes would require a near infinite amount of energy to maintain itself

What makes you think the conditions for generating and sustaining a universe obey the same laws as events within our known universe? We have no idea if causality or anything like it exists beyond our reality. For all we know, our conservation laws are unique to our island of existence, or even change non-trivially beyond the horizon of the observable universe.

I really, really enjoyed this thread. Thanks OP!

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If you ask the right questions, you may get answers before you die. The problem is we don’t always like the answer or what the answer implies, especially if it requires work on our part. Just for fun, what’s the question at the top of your list?

I bet one year from now, you’ll feel differently. I have a funny feeling 2023 is going to be a big year on a lot of fronts. I’m not saying things will be completely different, but I think big change is on the horizon. The pendulum is about to swing in an unexpected way. Don’t take your money and run yet. The fun is just getting started.

Cosmological Karen over here

Just throwing this in there... Scientists have started mapping the DMT realm in people's brains by slow IV infusion. Talk about confusing.

It can indeed.

I keep trying to find something on any limits to the worlds of the many world interpretation but it’s difficult.

>This implies that all possible outcomes of quantum measurements are physically realized in some "world" or universe. (Wiki)

I’m curious as to under these circumstances what determines whether something is possible or not. And are there potential universes that don’t exist because they are not the possible outcomes of any quantum ‘measurement’? Does that make sense?

I did find this .. though obviously I have no idea as to the validity ..

> In the Many World’s interpretation of quantum mechanics the universe we live in seems to split into separate universes. You’re in a not-special one of them and evidently they’ve got normal space. Same π.

https://www.askamathematician.com/2020/12/q-is-%cf%80-the-same-in-every-universe/

Nature is not about max efficiency. The optimum number of kidneys is how many? Nature has redundancy quite often

Only local reality is the universe?

Hell, I already want a refund

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You’d have more luck getting Tire Rack to honor their road hazard warranties.

Check out this discussion between Sabine Hossenfelder, Roger Penrose and Michio Kaku on multiverse theory.

Huh?

The sun is far far far away. The shadows it cast on the moon is not going to depend on your location standing on a rotating round rock.

Like I said

>He’s making it up he goes along.

So it’s just your gut that works as a physics detector then? The fact that peoples ‘guts’ evidently contradict eachother or have proposed things that later turned out to be false …. doesn’t undermine your gut. How lucky. You should market it.

Believing that your gut can inform you of the truth or not of the physics of complex cosmological phenomena is pretty much the definition of absurd.

Intuitively it’s obvious that the world is flat and the sun travels around it …… that must be true then. lol

Anyway enough of Camelot your gut … ‘tis a very silly place.’

Bruh I don’t believe in absurd things. I know what I know and I know the multiverse is real that’s it. People can debate on whether the Big Bang had a singularity or not but like it did. Where else did everything come from the bang? Quit waiting on proof that you’ll never get and just use your intuition

All possible universes if I remember correctly even in MWI? I claim no expertise but there are different kinds of multiverse theories. The cosmological inflationary and the MWI and branes (?) though some would like to link them? I’m not sure to what extent MWI is meant to be multiple versions of ‘this’ universe - the cat being alive in one and dead in another but the laws of physics still being the same? Or does it also produce universes with varied basic conditions? I don’t know - but i think the cosmological inflationary multiverse does include the possibility of universes with very different conditions and some parameters are unsustainable - the bubble pops , deflates etc.

FFS, the moon wobbles like the earth. PLEASE learn some physics.

>I don’t need evidence to know something is true when my gut already knows from faith and facts provided.

lol. So everything and anything anyone has ‘in their gut’ must be true? I always knew Santa was real…

Or you just have a special git detection device no one else does.

I mean frankly this is just silly. There’s overwhelming evidence that people believe contradictory , absurd , and provably wrong things.

Believe what you like but don’t pretend it has anything to do with reality or science. Don’t expect anyone to take it seriously.

>Black holes have a singularity and the Big Bang had a singularity.

These are based on mathematical modelling and extrapolation. Whether or not there was an actual singularity in the Big Bang is very much debated as is whether it would be the same kind of thing as what might be in black holes. It’s difficult to say since our mathematical modelling break down by that point.

>Put it together

And make something entirely imaginary and unjustified? Provide evidence that a singularity discharges energy into other universes….. Or this has any thing to do with infinite energy ( especially since some argue that the overall level of energy in this universe is zero).

Oh but I forgot. Your evidence is - ‘I feel it in my gut’ . lol. I guess that saves doing the science or the maths at least.

In the words of the prophets of Monty Python…

>He’s making it up as he goes along.

i figured they would. So in however many years it takes to develop models, theyd be able to predict trajectories after the collision and see what its new path. Correct? But how far out would they be able to look and would they, or do they, have the projected paths of the entire milky way and all objects in it to predict the natural course of events after collision?

In this case, they hit a moonlet of a bigger asteroïd. The orbit moonlet shifted a bit, but it never left the bigger asteroid. By studying exactly how much it shifted they teams behind this will learn more about how asteroids are affected by things like this.