While there is a lot of action, I found it generally boring because of length & too much contrived jargon.
Story summary.Eons ago, asteroid belt was created by the impact of an "contraterrene" celestial body with the now lost planet at that orbit. Asteroid belt now includes contraterrene debris ("seetee"), in addition to ordinary matter. This makes it extremely dangerous because impact means complete annihilation.
The mad scientist hero of the story will tame this contraterrene matter for human use, in spite of major opposition from all quarters.
Fact sheet.First published: Astounding, July 1942.
Download full text as part of the scans of the magazine it originally appeared in.
Among the stories from Analog/Astounding issues edited by John Campbell.
Related: Stories of Jack Williamson.