– SpaceX now has the world’s largest private satellite constellation.

After a successful launch Wednesday morning — following two weeks of delays caused by bad weather — SpaceX brought its total number of satellites in low-Earth orbit to 240, eclipsing California-based Planet Labs, which has about 200 active Earth imaging satellites.

Elon Musk’s rocket company sent a Falcon 9 rocket carrying 60 Starlink satellites to space from Cape Canaveral Air Force Station on Wednesday morning. The mission was number four for Starlink, which began launching satellites in May 2019 in batches of 60.

It’s the second Starlink launch this month — SpaceX is moving fast in the hopes of having more than 1,500 satellites in space by the end of 2020, allowing it to provide high-speed broadband internet connectivity to North America and Canada.

About 8 minutes after take off, the company also landed its rocket booster on drone ship “Of Course I Still Love You” in the Atlantic Ocean, a goal it’s been chasing for two weeks as bad weather in the recovery area has led SpaceX to reschedule its mission several times. Reusability is a key part of SpaceX’s business model.

To that end, the company’s two recovery vessels, Ms. Tree and Ms. Chief, attempted to also catch the clam-like halves of the rocket fairing — the nose of the rocket that carries the satellites during liftoff — when they fell back to Earth 45 minutes after launch. Ms. Tree was successful, but the other fairing half landed in the water, SpaceX said. The company still plans on trying to recover and reuse the piece.

The Starlinks are part of a growing private sector that is focused on building telecommunications constellations for low-Earth orbit. Unlike more traditional geostationary satellites, Starlinks orbit much closer to Earth at about 340 miles.

Their proximity means they offer more reliable internet connections, but it also comes with a side effect: There have to be tens of thousands of them in orbit to connect the globe. SpaceX’s mission is to provide connectivity to regions that previously didn’t have it, or where it was unreliable or too expensive.

The scale of the Starlink constellation — SpaceX has already been approved to launch 12,000 — has brought it to the attention of astronomers who have spotted the satellites streaking across the night sky. Their brightness is affecting data collection, and the American Astronomical Society has been working with SpaceX to test a potential solution.

The prior Starlink launch, in early January, carried a darkened satellite with an experimental coating. But until the satellite reaches its operational altitude of 550 kilometers in late February, astronomers won’t know if the coating worked.