A Japanese HTV cargo freighter is ready for launch Wednesday with the last set of six lithium-ion batteries to upgrade the International Space Station’s solar power truss.

Orbital ATK’s Antares rocket will deliver a Cygnus supply ship into orbit Monday to begin a three-day pursuit of the International Space Station.

Ending months of speculation, Blue Origin, a company owned by Amazon-founder Jeff Bezos, has won a milestone contract to provide first-stage rocket engines for a powerful new booster being designed by United Launch Alliance to replace its current fleet of Atlas and Delta launchers, the companies announced Thursday.