How will the universe end?
NASA/ESA/Hubble
The following is an extract from our Lost in Space-Time newsletter. Each month, we hand over the keyboard to a physicist or two to tell you about fascinating ideas from their corner of the universe. You can sign up for Lost in Space-Time for free here.
The fate of the universe once seemed so clear. For the next few billion years, it would continue expanding as it had since the dawn of time. Then, gravity would wrestle back control, beginning a period of contraction. …