Katie MackFeb 7, 2023
If you ever get awed and overwhelmed by the incomprehensible vastness of space, just keep in mind that it’s expanding, more rapidly minute by minute, and to the best of our understanding it will never ever stop
Show threadDom BrastedFeb 7, 2023
@AstroKatie
Last year, my 8yo son asked, "How can the universe be infinite? If it's constantly expanding , it must have an edge. "
Show threadT L Holaday

@dombrasted @AstroKatie Born in an inland region, it was eight years before I saw the ocean from the shore. The horizon was the edge of what I could see, not the edge of the ocean.

If that is an unsatisfactory answer to your eight-year-old, here’s Sabine:

https://youtu.be/l3C_db2RjKo

What does the universe expand into? Do we expand with it?

YouTube
Feb 7, 2023 at 1:47pmWeb
Show threadDom BrastedFeb 7, 2023
@tlholaday @AstroKatie Thank you.
We actually discussed how there is more than one meaning of infinity.