Q&A with Giulio Ranzo, CEO of Avio (members only)

These photos show the fiery liftoff of a United Launch Alliance Delta 4-Heavy rocket from Cape Canaveral on Dec. 10, riding three pillars of flame from its hydrogen-fueled RS-68A main engines.

Technicians working in the jungle of French Guiana have installed four new European Galileo navigation satellites on top of their Ariane 5 launcher, and filled the rocket’s upper stage with storable liquid propellants for liftoff Tuesday.

A replay of the United Launch Alliance Atlas 5 rocket launching the Orbital ATK’s commercial Cygnus cargo freighter to the International Space Station from Cape Canaveral, Florida.