> its distance is also not limited by light travel distance
At cosmological scales, there is no single, correct definition of "distance." There is coordinate distance, light travel distance, angular diameter distance, luminosity distance, and other measures.[0] All these distances are the same at very small scales, but when you start looking at larger scales, General Relativity starts to matter and the geometry of the Universe is no longer Euclidean.
[1] https://en.wikipedia.org/wiki/Shape_of_the_universe
[2] see your own source
Only after ~200 million years the first generation of stars appeared, which we cannot hope to see with a telescope. The first proto-galaxies (too faint) and galaxies took even longer, hence this billion years of darkness.
1. https://scitechdaily.com/gaia-spacecraft-discovers-parts-of-...
2. https://www.darkenergysurvey.org/supporting-science/large-sc...
Also after a particular number of degrees it doesn't matter quite so much, the universe is isotropic enough that looking in any direction pretty much gives the same results.
Would this graph essentially look the same if the observations were made elsewhere, like way over near the redshifted elliptical galaxies? Sometimes it's difficult to wrap my mind around the combination of distance and time represented at these scales.
So, this is the slice that the telescope was observing.
You can roughly "see" the dark matter web by looking at the web like distribution of galaxies.
Is the universe infinite? It appears to be based on existing evidence. And if not infinite, then being geometrically flat makes it unthinkably vast multiplied by unthinkably vast.
How did the universe even start? And how can that question make any sense at all without time? How can there be "before the beginning of the universe" when "before" is not a concept that exists?
Fabulous questions to ponder.
Nothing could convince me there is a god.
I simply don’t believe in any sort of god at all. No heaven, no hell. When you’re dead, you're dead.
You are welcome to your own beliefs. I won’t impose mine on you and don’t impose yours on me.
Why can we only see 90° of the sky?
I look at the map at the bottom of the page and wonder why it isn't a circle. I'm obviously missing a key concept.
The full map is actually a sphere. This visualization shows a thin slice of the Universe. Its thickness is about 10 degrees. More astronomical data is available but it is not possible to show all of it at once on a 2D map. The image would be completely saturated with dots.
It actually visualizes the slice depicted on the main page as a 3D rotation. I would struggle to explain the concept of arc slicing to a five-year-old though.
Does that mean their slice is only 1/36th of the whole picture?
https://www.amazon.com/Complete-Hitchhikers-Guide-Galaxy-Box...
Feelings like somberness and loneliness only exist in your mind, as a result of how evolution formed how our brains work. It doesn’t have any real meaning outside of our current restraints. In fact, meaningfulness itself is a concept that only exists within our minds.
That set aside, what I find more disappointing is how the speed of light, the accelerating expansion of the universe, and the inescapable increase of entropy place serious constraints on anyone’s future.
Because we don't have evidence that they aren't.
Like a google sky type interface with a timeline scroll.
A roughly accurate analogy: think of a boomerang thrown in outer space, moving at a constant velocity, but slowing its rotation over time (for some reason - work with me). The result is that over time, each loop of the boomerang will happen over a longer and longer distance.
The boomerang isn't stretched, but its spiral looping is.
Scrolling around the map and looking further and further back in time reminded me of this Kurzgesagt video [0]. It's crazy to think how much of the universe is lost to and unreachable by us.
Kurzgesagt has a lot of great content (even if it's a bit cartoonish). I'm sure they get things wrong, but I feel like they make an effort to research the topic first.
But don't we have pictures of galaxies going back to the earliest universe? I thought that JWST is specifically made to image them.
Also add-on feature would be nice to find some tribes on the map that have either "scrolls of ancient wisdom" or a good chance of a "an advanced tribe" I'm less interested in the "valuable metal deposits worth 50" but that's far better than "unleashed a horde of barbarians!" but I guess it's a gamble for every tribe you find.
