For centuries, humanity has been utterly transfixed by the cosmos, with generations of astronomers, philosophers and everyday ponderers striving to better understand the grand capsule of our existence. And yet to this day, some of the most basic, fundamental qualities of the universe remain a mystery. How Large is the Universe? is a fascinating 20-minute documentary by Thomas Lucas and Dave Brody exploring the universe's immense scale of distance and time.
"Recent precision measurements gathered by the Hubble space telescope and other instruments have brought a consensus that the universe dates back 13.7 billion years. Its radius, then, is the distance a beam of light would have traveled in that time – 13.7 billion light years. That works out to about 1.3 quadrillion kilometers. In fact, it's even bigger – much bigger. How it got so large, so fast, was until recently a deep mystery."
For more on the subject, see these five fascinating ways to grasp the size and scale of the universe.
Maria Popova is the founder and editor in chief of Brain Pickings, a curated inventory of cross-disciplinary interestingness. She writes for Wired UK, GOOD Magazine and DesignObserver, and spends a great deal of time on Twitter.