math.ucr.edu

mxEov TIL Gravity moves at the Speed of Light and is not Instantaneous. If the Sun were to disappear, we would continue our elliptical orbit for an additional 8 minutes and 20 seconds, the same time it would take us to stop seeing the light (according to General Relativity).
p8r4Q TIL that in 193 AD, the personal bodyguards of the Roman Emperor Pertinax, after killing him, auctioned off the entire Roman Empire. The successful bidder, Didius Julianus was emperor for two months, after which he was beheaded and replaced.
1dX7 TIL There is no center of the universe. The Big Bang wasn’t an explosion in space but rather an explosion of space, with nothing before it. Therefore there is no center. Everything from every point is expanding, but not from a central location.