GM Jackson Physics and Mathematics

In the beginning, there was order, a very hot singularity, but as time progressed the universe expanded and cooled--and became more disor...

In the above video the Physics Girl discusses how the expanding universe causes galaxies to move apart, and in turn causes photon wavelen...

Alice and Bob don't always agree. Alice is outside our universe, looking at the big picture. She sees the universe expanding at a s...

From our point of view, the universe is expanding at an exponential rate. We would have this perception no matter where we are in the univ...