SpaceX is set to launch two prototype probes Wednesday to begin testing spacecraft and antenna technology the company hopes will eventually power a network of thousands of satellites blanketing planet Earth with broadband Internet coverage.

A powerhouse Internet-from-space communications satellite will be launched from the Cape next year atop a United Launch Alliance Atlas 5 rocket, officials announced Wednesday.

Fifty-six more Starlink internet satellites lifted off early Sunday atop a Falcon 9 rocket from Cape Canaveral on SpaceX’s 32nd launch of the year.