G枚del proved that, mathematically speaking, time travel is physically possible Quality Stock / Alamy
The following is an extract from our Lost in Space-Time newsletter. Each month, we hand over the keyboard to a physicist or mathematician to tell you about fascinating ideas from their corner of the universe. You can sign up for Lost in Space-Time for free聽here.
There may be no better way to get truly lost in space-time than to travel to the past and fiddle around with causality. Polymath Kurt G枚del suggested that you could, for instance, land near your younger self and…
