Live coverage: Proton lifts off with U.S.-built satellite for Asian company

The scheduled launch Saturday of two commercial BlackSky Earth-imaging satellites from New Zealand will double as an opportunity for Rocket Lab to test an enhanced heat shield on its Electron booster, an upgrade that should allow the company to recover rockets in better condition for eventual reuse.

Rolling out for its first liftoff of the year, an Ariane 5 rocket journeyed out of a launcher assembly building Thursday and rode railroad tracks to its launch pad in French Guiana with two European communications satellites.

A Japanese HTV cargo freighter is set for launch Tuesday (U.S. time) aboard a powerful H-2B rocket, ferrying six new lithium-ion batteries, a Sony-developed laser communications terminal, fresh water and other equipment to the International Space Station.