The Universe's Mind-Bending Twist

追加: 2026-06-06

[00:00:00]It's so Planet of the Apes, right? IT'S LIKE, >> "DAMN YOU, >> YOU FINALLY DID IT. DAMN YOU ALL THE HELL."

[00:00:08]>> OH, that'd be great.

[00:00:09]>> So great. So my interpretation of that was that they went all the way around.

[00:00:14]>> And so the interesting thing is that also means that if you look at distant galaxies, the light is also traveling all the way around the universe. So it could be that some of those distant galaxies are the Milky Way and we're seeing the light from the Milky Way wrap all the way around and come back to us.

[00:00:29]We'd be seeing the Milky Way in the past.

[00:00:31]>> Wow.

[00:00:32]>> So we it would be hard to know. Like maybe we'd see an active black hole quazar with jets flying out in the early phases of the Milky Way and we'd think, "Oh, that's just a different galaxy."

[00:00:41]>> Oh wow.

[00:00:43]>> Yeah. So we >> because galaxies, the young galaxies look very different from mature galaxies, right?

[00:00:49]>> And we used to think that there were different kinds of objects in the outer universe like quazars. Why are they all distant? How come it's not a quazar right next door with these monstrous nuclear emissions? And we had to like figure out that it's it's likely just younger galaxies and maybe we used to look like a quazar and we don't anymore.

[00:01:10]>> Right. So even a distant galaxy looking back at us is seeing us in the past given the light travel time. So we could still look like a quazar to a distant galaxy.