Q&A with Curt Blake, president of Spaceflight Industries (members only)

Relativity Space will try a third time to launch a 3D-printed rocket from Cape Canaveral Wednesday night, and weather forecasters predict a 95% chance of favorable conditions for the late-night test flight.

SpaceX fueled up a Falcon 9 rocket, ran through a mock countdown and fired the booster’s nine Merlin main engines Friday in a successful preflight static fire test officials hope will clear the way for liftoff Jan. 6 on a space station resupply mission.

An Indian Polar Satellite Launch Vehicle, crowned with 31 satellites from 15 countries, is counting down to liftoff early Friday from an island spaceport on the country’s east coast.