Richard Branson’s Virgin Orbit has delivered satellites from three countries into space, its second rocket launch from a plane this year.

The company’s modified 747 jet dubbed Cosmic Girl jet took off from California’s Mojave Desert, carrying the 70-foot rocket beneath its left wing.

Once the plane was over the Pacific near the Channel Islands, the LauncherOne rocket peeled away, then fired its engine to head to space.

The drop occurred at an altitude of about 37,000 feet.

Camera views showed the package of seven small satellites on the end of the second stage, against the curve of the blue Earth.

The satellites are from the US Defense Department, the Royal Netherlands Air Force and Poland’s SatRevolution company, which is working to set up an Earth-observing constellation.

An hour after the rocket firing, Virgin Orbit was still awaiting confirmation that the launch was a success.

Branson — whose Virgin Galactic company is close to launching paying customers to the edge of space — planted a kiss on the cheek of Virgin Orbit CEO Dan Hart, once the satellites reached orbit.

“It’s a pinch-yourself moment,” Branson said. “Cheers! Well done, everybody.”

Virgin Orbit sent its first batch of satellites into orbit in January; the 10 Nasa-sponsored satellites were designed and built by universities. A flight demo last year was unsuccessful.

Virgin Orbit said its air-launched system can put satellites into orbit on relatively short notice, compared with the more traditional way of launching rockets from the ground.

Branson hopes to make satellite launches “almost routine” from the Mojave Air and Space Port.

Branson named Tuesday’s mission Tubular Bells after the music made famous in the 1973 horror film The Exorcist. It was the first album put out by Virgin Records.