Explaining Black Holes in Five Ways

Research astronomer Varoujan Gorjian (whose team at NASA is called Structure of the Universe Group) explains Black Holes to five different individuals whose understanding exists at five different levels: a five-year old, a teenager, a grad student studying astronomy, and an expert. In the fascinating video for WIRED, super-personable Gorjian begins by explaining how gravity works and ends up discussing low-luminosity active galactic nuclei. While …

The Universe is Purportedly Made of “Spacetime Foam”

Recent considerations may render everything we think we know about the cosmos untrue. Researchers currently ponder whether or not space, which was once considered constant and guided by the arrow of time, is actually made up of an ever-changing mass of bubbles that contain mini-universes—which they’re referring to as “Spacetime Foam.” This phenomenon could explain plenty of gaps in various research fields—from physics and quantum …

Stephen Hawking’s Last Book Offers Brief Answers to Big Questions

In his collection of final thoughts, published 16 October, physicist and cosmologist Stephen Hawking addresses nothing less than the future of humanity. The book, called Brief Answers to the Big Questions, emphasizes the importance of regulating artificial intelligence, implementing clean nuclear fusion power and preparing for asteroid collision. He also predicted that gene editing tools will create an advanced race of superhumans—and so much more. In many …