Why is the universe expanding at an ever-increasing rate? This is one of the most exciting yet unresolved questions in modern ...

(via Science Asylum) Believe it not, Einstein originally thought the universe was static. It would take Alexander Friedmann to correct him. Here are the Friedmann equations, explained simply.

What's needed to determine the shape and geometry of our universe? We know the universe will continue to expand forever, so now we can begin to complete the first Friedmann equation, and determine the ...