Live coverage: Kennedy Space Center to reopen Friday

A SpaceX Falcon 9 rocket ignited its nine kerosene-fueled Merlin engines on the launch pad at Cape Canaveral on Tuesday evening in a critical milestone before liftoff with a commercial Thai communications satellite later in the week.

Staying true to a corporate philosophy that favors high-visibility flight tests, SpaceX plans to continue wringing out major parts of the company’s human-rated Dragon spaceship in a sequence of dramatic flights leading up to the capsule’s first crewed mission scheduled for 2017.

A massive radio broadcasting satellite for SiriusXM is set for liftoff Friday on top of a Falcon 9 rocket, punctuating a busy week for SpaceX that included the debut of a new-generation cargo ship for the International Space Station and a spectacular atmospheric test flight of a prototype rocket over South Texas.