A SpaceX Falcon 9 rocket was scheduled to launch 60 new Starlink satellites for the company's growing megaconstellation at 2:19 p.m. EDT (1819 GMT) Thursday from Pad 39A of NASA's historic Kennedy Space Center in Florida. But 15 minutes before the planned liftoff, SpaceX scrubbed the mission.
"Standing down from today's Starlink launch due to recovery issue; vehicle and payload remain healthy," SpaceX representatives announced in a Twitter update.
SpaceX will not try to launch on Friday (Sept. 18), the next available opportunity, because of expected bad weather in the recovery zone, the company added in another Thursday tweet. (The recovery zone is the patch of ocean where the Falcon 9 first stage will land on a SpaceX "drone ship" shortly after liftoff.) A new target date has not yet been announced.
Whenever it happens, you'll be able to watch the launch live here and on the Space.com homepage, courtesy of SpaceX, beginning about 15 minutes before liftoff. You'll also be able to watch the launch directly via SpaceX here.
SpaceX did not specify the nature of the "recovery issue," but it is presumably related to the company's plan to recover the first stage of the two-stage Falcon 9 rocket by landing it on the company's drone ship "Just Read the Instructions" in the Atlantic Ocean. Good weather at the floating landing pad is required to ensure a safe landing.
Today's launch had a 30% chance of bad weather affecting a liftoff from Pad 39A, according to the U.S. Space Force's 45th Weather Squadron.
Recovering Falcon 9 rocket boosters is a key part of SpaceX's plan to reduce the cost of spaceflight while scaling up the company's launch pace. The Falcon 9 first stage on this mission has already flown twice before this year. It launched SpaceX's Demo-2 astronaut mission for NASA in May, then flew again in July to deliver the South Korean military satellite ANASIS-II into orbit.
SpaceX has launched 16 missions so far in 2020, with this flight, called Starlink 12, set to be the 13th Starlink mission since 2019.
SpaceX has launched more than 700 Starlink satellites into orbit to build a massive constellation designed to provide high-speed broadband internet access around the world. The company initially plans to build a constellation of 1,400 satellites, with a core of between 500 and 800 required for initial service, SpaceX CEO Elon Musk has said.
Editor's note: This story was updated at 12:20 a.m. ET on Sept. 18 with the news that SpaceX will not attempt to launch on Sept. 18.
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