Tonight, SpaceX will launch the first flock of their Starlink satellites to space. These are the vanguard of what CEO Elon Musk hopes will eventually become a network of 12,000 orbiting devices providing cheap, global internet coverage.

The launch window opens at 10:30 p.m. E.T. The satellites, which are densely packed inside the cargo hold already, will be delivered to space on a Falcon 9 rocket. The weather forecast for Cape Canaveral, SpaceX’s standard launch site, looks promising for