Watch the Falcon Heavy roar to life

Spaceflight Now’s Stephen Clark reports from Starbase in South Texas as SpaceX prepares the largest rocket in history for a second launch attempt after calling off a launch attempt Monday due to a valve problem.

Blue Origin said Sunday that it lost a set of powerpack hardware for its BE-4 engine during a ground test mishap, dealing at least a minor setback to the development of a powerful U.S.-made propulsion system that United Launch Alliance says is the leading candidate to power the first stage of its next-generation Vulcan rocket.

A small Japanese satellite scheduled for launch Friday on a Rocket Lab Electron booster will release hundreds of colorful sky pellets to fall into the atmosphere next year, creating an artificial meteor shower that could be visible to millions.