The Mystery That Keeps Neil deGrasse Tyson Up At Night 🤯 #astrophysics #shorts

We will always be able to see the galaxies in the Local Group. We won't get separated from them by the expansion of space because the group is bound together gravitationally. But the rest of the galaxies will be beyond the cosmic light horizon in 150 billion years or so.
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Neil deGrasse Tyson is an American astrophysicist, author, and science communicator. Tyson studied at Harvard University, the University of Texas at Austin, and Columbia University. From 1991 to 1994, he was a postdoctoral research associate at Princeton University. In 1994, he joined the Hayden Planetarium as a staff scientist and the Princeton faculty as a visiting research scientist and lecturer. In 1996, he became director of the planetarium and oversaw its $210 million reconstruction project, which was completed in 2000. Since 1996, he has been the director of the Hayden Planetarium at the Rose Center for Earth and Space in New York City. The center is part of the American Museum of Natural History, where Tyson founded the Department of Astrophysics in 1997 and has been a research associate in the department since 2003.
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[jumboegg]

The implication is that there are parts of the universe that have already acclerated past our horizon (Neil's "previous chapter"). We believe we can see most of the way back to the big bang, but information beyond that is lost and may never be truly discovered.

[magichands]

A moment of silence for those explorers 300 billion years in the future

[lucwilcox]

Damm madye there was something befor 13.8 billion years ago but we can’t see it anymore

[TheKillingThrow]

I like to think the the universe is like an infinity large outside swimming pool. And the fabric of the universe is the water that fills that pool. The matter is the stuff that falls into the pool. But basically since the pool is infinitely large, but the water is finite, it’s surging off at all directions at once to fill in the void. And eventually the pool levels drop but spread out wider and wider until there’s a massive surface area of water with the smallest of depths.

[ezechialtaylor]

Thus why it's so important to figure out these wormholes

[korach]

what I wonder is WHERE is the universe, because we always talk about the universe and the big bang etc, but what’s beyond that, where’s the universe, I wanna see the bigger picture, like is the universe a mega dead “star” and all the scattering is pieces of what used to be a single thing, if so what was it before, and are there other “universe” that aren’t expanding/ haven’t exploded or died, and are in the original/ in similar state the universe was?, are we germs in some sort of living or former living creature? When are we going to see other live/extinct species out there? or are we possibly alone? It’s pretty unlikely in my opinion, but not impossible, also is the earth a living organism? I’m not talking about the living creatures in it, I’m talking about earth itself, could it possibly be alive or dead? also what IS space, could it possibly be something and not nothing? Maybe a liquid? Or even a solid? we could be so microscopic we’re between it’s building materials (kinda like between cells idk)

[WWTormentor]

It’s already happened. There’s a large portion that is already outside our view and lost forever.

[ArthurTheEpicGuy]

Feels like that star trek next gen episode where the enterprise gets destroyed by the whole universe going missing

[WhatWhy]

So if all the galaxy's get pushed away from each other, maybe they will all meet up on the edge of the universe and once again we will be able to see them... Imagine the universe as a sphere and the outer edge holds all the galaxy's. So looking out from the milky way, all the Galaxy's would appear flat but just like on earth we know that it curves... This would resemble the early universe and the cycle repeats...

[void_of_trash]

If the universe is truly infinitly large then potentially the light from other universes may have simply not reched us yet or the light from our own universe out shines theirs.

[kristi-cjsu]

Indeed perhaps thats what happened to us exactly

[davefrancisjarrett]

Can we become curious enough to become Archaeologists of the Cosmos!
Simple questions are appropriate one thinks!

[stevep]

There are approximately 100 galaxies moving towards the milky way. Wouldn't those brilliant astronomers be wise enough to surmise if galaxies are moving towards us there must be others moving away?

[danieljohnson]

We better figure out what Dark Energy is by then, so we have something to look at behond the local Galaxy.

[davez]

I was confused that universe is accelerating expanding. The expanding is based on the redshift, the most remote galaxies have higher rates, closer ones are less. But remote ones are also earliest back in time. So the expanding rate is decreasing. In other words, in early days, the universe was expanding faster than it is now. Our Milky Way is not expanding at speed of light for sure and right now. What am I missed?

[WhatWhy]

Basically what he is saying is that this is one of the great filters and we need to get our crap together before it's too late.

[bignate]

How will the galaxies move from our view when all the galaxies are moving at the same rate of travel????

[learngeographywithalex]

So we are not accelerating with them ?

[RonG_GA]

I got one for the community...Has the sun actually died already and we're seeing the light it produced long ago when it did.

[The_Bear_Adventures]

I mean, yes, whatever went on before the big bang.