Photos: Atlas 5 rocket aims for International Space Station

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.

The Airbus-built Solar Orbiter spacecraft has been closed up inside the payload fairing of a United Launch Alliance Atlas 5 rocket in preparation for liftoff from Cape Canaveral in February on a joint mission between the European Space Agency and NASA.

Launching into a sun-splashed summertime afternoon sky, a previously-flown SpaceX Falcon 9 rocket climbed into orbit from Florida’s east coast Friday with a U.S.-built, Bulgarian-owned television broadcasting satellite.