Full Idea
The world is made up of particles + fields, and nothing else; there is no need to add space as an extra ingredient. Newton's space is the gravitational field.
Gist of Idea
The world is just particles plus fields; space is the gravitational field
Source
Carlo Rovelli (Reality is Not What it Seems [2014], 03)
Book Reference
Rovelli,Carlo: 'Reality is Not What it Seems', ed/tr. Carnell/Segre [Penguin 2016], p.65
A Reaction
I get the impression that particles are just bumps or waves in the fields [yes! Rovelli p.110], which would mean there are fields and nothing else. And no one seems to know what a field is.