SpaceX is set to launch its 40th mission of the year this evening (April 18).
A Falcon 9 rocket carrying 23 of the company’s Starlink internet satellites is scheduled to lift off from Cape Canaveral Space Force Station in Florida today, during a four-hour window that opens at 6:40 p.m. EDT (2240 GMT).
SpaceX will livestream the launch via its account on X, beginning about five minutes before the window opens.
Related: Starlink satellite train: How to see and track it in the night sky
If all goes according to plan, the Falcon 9’s first stage will come back to Earth about 8.5 minutes after launch. It will make a vertical landing on the droneship A Shortfall of Gravitas, which will be stationed in the Atlantic Ocean.
It will be the seventh launch and landing for this particular booster, according to a SpaceX mission description. Two of the rocket’s previous six flights sent astronauts to the International Space Station — the private Ax-2 and Ax-3 missions, which launched in May 2023 and January of this year, respectively.
The Falcon 9’s upper stage, meanwhile, will continue hauling the 23 Starlink satellites toward low Earth orbit this evening, ultimately deploying them there about 65 minutes after liftoff.
Twenty-six of the 39 orbital missions that SpaceX has launched so far in 2024 have been devoted to building out the Starlink megaconstellation. That network is already huge: It currently consists of more than 5,760 operational satellites, according to astrophysicist and satellite tracker Jonathan McDowell.
The 39-launch tally does not include the March 14 launch of SpaceX’s Starship megarocket, which the company is developing to take people and cargo to the moon, Mars and beyond. Starship reached orbital velocity during that mission, which was the vehicle’s third test flight overall.
