Recent content by Jay B

I've seen this diagram on a few sites. I went down this rabbit hole while watching a video about Mach's principal. It showed the following equation for the gravitational constant: G ≈ c^2 * radius of the universe / mass of the universe. I've always been interested in G, so I fiddled with it a...

Thanks for the link! I'm having a little bit of a hard time working through the equations, but I'll keep at it.

The distance past which light emitted today would never be able reach us because the expansion of space between Earth and that sphere is expanding faster than the speed of light (or will be).

Hi Everyone, I'm hoping someone can share an equation that would give the distance of the cosmic event horizon for a given time after the big bang. Thanks for any help! Jay

HI everyone, I'm new to the forum and want to introduce myself. My name is Jay, I have a very amateur level of understanding of physics and cosmology (undergrad courses in physics and astronomy). I've been looking for a place to ask physics questions and learn more, I've had a passion for...