Watch as Falcon 9 launches with 10 Iridium satellites and its first stage lands

A United Launch Alliance Delta 4-Heavy rocket climbed into orbit Monday from a military base northwest of Los Angeles, delivering to space a classified U.S. government spy satellite as large as a school bus and leaving just three Delta rockets left to fly before retirement.

The Falcon 9 booster that dramatically flew back to Earth last month following a commercial satellite launch ignited again Friday in a hold-down test at SpaceX’s Cape Canaveral launch pad, days before the company is due to launch its next mission from California, officials said.

SpaceX Starship is set to propel itself into the record books today on its maiden flight, becoming the tallest, heaviest and most powerful rocket ever launched by humankind into space, topping a role call of famous and history-making heavy-lift launch vehicles including the mighty Saturn 5 that first took humans to the moon.