The GOODS - North Field of Galaxies Courtesy James Webb Space Telescope...

[WillBrink]

What's on the other side of "the edge of the universe"?

Nothing, another universe, it's conjecture as to possibilities.

[SteyrAUG]

Surprised you have not heard of her before. She's well known and respected among high level science/physics community. She also busts chops about various positions held by other physicists. Ridiculously smart, with common sense and grounded.

I generally avoid YT channels on any subject. Too many clowns to sort through. I watch Forgotten Weapons and that's about it.

That said, Sabine Hossenfelder has some of the few videos I can actually get all the way through. It's refreshing. She reminds me a bit of Sagan with how relatable she is but with more substance and less wonderous speculation.

[WillBrink]

I generally avoid YT channels on any subject. Too many clowns to sort through. I watch Forgotten Weapons and that's about it.

That said, Sabine Hossenfelder has some of the few videos I can actually get all the way through. It's refreshing. She reminds me a bit of Sagan with how relatable she is but with more substance and less wonderous speculation.

I have a collection of YT channels I find to be useful, hers is one.

[Artos]

I don't think we know as much as we think we do...Einstein or one of the other geniuses suggested that if you could see forever in the universe, you would see the back of your head. That makes ya think about the other side.

It's fascinating & betting the truth would make everyone's jaw drop.

[SteyrAUG]

I don't think we know as much as we think we do...Einstein or one of the other geniuses suggested that if you could see forever in the universe, you would see the back of your head. That makes ya think about the other side.

It's fascinating & betting the truth would make everyone's jaw drop.

Here's another problem, I don't think we can even see everything that is there.

Radio and IR have existed since almost forever but how recently did we learn they were there all along? What else is also right there and we simply can't see or detect it?

[WillBrink]

Here's another problem, I don't think we can even see everything that is there.

Radio and IR have existed since almost forever but how recently did we learn they were there all along? What else is also right there and we simply can't see or detect it?

Litterally what most of the universe is made of, and powered by, matter and energy we can't see, nor have any real idea what they are. They're detected indirectly at this time, some still not convinced they actually exists, but the maffs checks out they do. As the universe made mostly of matter we know very little about, powered by an energy source we know literally nothing about, I'd say humility is a good idea at this time.

[ClearedHot]

https://en.m.wikipedia.org/wiki/GN-z11

The universe is definitely older than we think. That wiki article on the oldest galaxy discovered to date has an animation that puts things into perspective.

[Disciple]

In theory, we are able to see more and more of the universe with the passing of time.

Funny, I've read the opposite.

In an accelerating universe, there are events which will be unobservable as t → ∞ as signals from future events become redshifted to arbitrarily long wavelengths in the exponentially expanding de Sitter space. This sets a limit on the farthest distance that we can possibly see as measured in units of proper distance today. Or, more precisely, there are events that are spatially separated for a certain frame of reference happening simultaneously with the event occurring right now for which no signal will ever reach us, even though we can observe events that occurred at the same location in space that happened in the distant past.[6]

While we will continue to receive signals from this location in space, even if we wait an infinite amount of time, a signal that left from that location today will never reach us. The signals coming from that location will have less and less energy and be less and less frequent until the location, for all practical purposes, becomes unobservable. In a universe that is dominated by dark energy which is undergoing an exponential expansion of the scale factor, all objects that are gravitationally unbound with respect to the Milky Way will become unobservable, in a futuristic version of Kapteyn's universe.[7]

[jsbhike]

Neat picture, that I just got to open.

First day posted the posts on page 1 would open, but the picture itself would time out? and go to an error page. Just got it to open now like it was 1998 and on dial up.