In images widely being circulated on social media, students of Beijing’s Tsinghua University can be seen holding sheets on which is written one of the Friedmann equations. Tsinghua University is a ...

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 ...

“The equation is called the Friedmann equation and, simply put, governs the expansion of space in a homogenous universe such as our own. In the 1920s Alexander Friedmann, a Russian astrophysicist, ...