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Physics

Are there planets that are better for life than Earth?

Philosophers have long debated whether Earth is the best of all worlds. More powerful telescopes are finally giving us a better chance of answering this question, writes astronomer Chris Impey

By Chris Impey

7 April 2023

A super-Earth orbiting its red-dwarf

A super-Earth orbiting its red-dwarf

NASA/JPL-Caltech

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.

Over 300 years ago, the German polymath Gottfried Wilhelm Leibniz argued that ours was the best of all possible worlds. The word “world” comes from Old English, originally meaning Earth, and later extending to the physical world in …

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