SpaceX launches 81 satellites to orbit from California, lands rocket on ship at sea

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SpaceX launched a passel of satellites to orbit early Tuesday morning (July 7).

A Falcon 9 rocket carrying 81 payloads lifted off from California's Vandenberg Space Force Base on Tuesday at 3:12 a.m. EDT (0712 GMT; 12:12 a.m. local California time), kicking off a mission SpaceX called Transporter-17.

As that name suggests, Transporter-17 was the 17th flight of SpaceX's Transporter rideshare program. The company operates another rideshare series as well, called Bandwagon, which has launched four missions to date.

The 20 Transporter and Bandwagon missions that flew before Transporter-17 sent more than 1,800 payloads to Earth orbit. Transporter-1 lofted 143 of those back in January 2021, which remains the global single-launch record.

The 81 payloads that went up on Transporter-17 included "cubesats, microsats, hosted payloads and orbital transfer vehicles carrying eight of those payloads to be deployed at a later time," SpaceX wrote in a mission description.

Perhaps the biggest satellite riding the Falcon 9 on Tuesday was CAS500-4, a South Korean Earth-observation craft that tips the scales at about 1,100 pounds (500 kilograms).

The satellite, whose name is short for "Compact Advanced Satellite 500-4," is the fourth member of a planned five-satellite CAS500 fleet in low Earth orbit (LEO). CAS500-4 will help the South Korean government monitor crops and forests, among other tasks.

a black and white rocket rests on the deck of a ship at sea at night

The first stage of the Transporter-17 Falcon 9 landed about 8.5 minutes after launch on the SpaceX droneship "Of Course I Still Love You," which was stationed in the Pacific Ocean. It was the 11th flight for this particular booster, according to the company's Transporter-17 mission description.

The Falcon 9's upper stage, meanwhile, continued hauling the 81 payloads to LEO, where they'll be deployed starting about 50.5 minutes after launch. CAS500-4 won't be released until nearly 2.5 hours after liftoff.

Transporter-17 was the 79th Falcon 9 launch of 2026. Nearly 80% of this year's missions have been devoted to building out Starlink, SpaceX's giant broadband constellation in LEO.

Editor's note: This story was updated at 3:25 a.m. ET on July 7 with news of successful launch and rocket landing.

Michael Wall is the Spaceflight and Tech Editor for Space.com and joined the team in 2010. He primarily covers human and robotic spaceflight, military space, and exoplanets, but has been known to dabble in the space art beat. His book about the search for alien life, "Out There," was published on Nov. 13, 2018. Before becoming a science writer, Michael worked as a herpetologist and wildlife biologist. He has a Ph.D. in evolutionary biology from the University of Sydney, Australia, a bachelor's degree from the University of Arizona, and a graduate certificate in science writing from the University of California, Santa Cruz. To find out what his latest project is, you can follow Michael on Twitter.

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