The Universe Is Bigger Every Second 🤯 | Neil deGrasse Tyson

Added: 2026-05-05

[00:00:00]galaxies that are 13 billion years old and somehow that might suggest that the universe is expanding and that there is more and more universe all the time.

[00:00:10]Well, first of all, the universe is expanding and there is more and more observable universe all the time.

[00:00:15]Universe at its edge is expanding at one light year per year. That's how that works. And so in a billion years, the edge is not going to be 14 billion lighty years away. It'll be 15 billion light years away. So we got that. Okay.

[00:00:28]So now galaxies 13 billion light years away, we are seeing light emitted by that galaxy and that light has been traveling for 13 billion years. Okay?

[00:00:37]Yes, that galaxy emitted its light when the universe was 10% its current age and in fact was much smaller than it is