Full Idea
More and more space-time is literally being created from nothing all the time as the universe expands.
Gist of Idea
The universe expands, so space-time is enlarging
Source
Adrian Bardon (Brief History of the Philosophy of Time [2013], 8 'Realism')
Book Reference
Bardon,Adrian: 'Brief History of the Philosophy of Time' [OUP 2013], p.162
A Reaction
[He cites Paul Davies for this] Is the universe acquiring more space, or is the given space being stretched? Acquiring more time makes no sense, so what is more space-time?