A United Launch Alliance Atlas V rocket launched 29 of Amazon's internet satellites on Monday night (April 27), tying its payload-weight record in the process.

A United Launch Alliance Atlas V rocket launched 29 more of Amazon's internet satellites to orbit on Monday night (April 27). (Image credit: ULA)

ULA called Monday's mission Amazon Leo 6, because it was the sixth that the company has flown to help build out the Amazon Leo broadband constellation in LEO.

The network, a rival to SpaceX's Starlink internet megaconstellation, will eventually consist of more than 3,200 satellites, if all goes to plan.

It will take more than 80 launches by a variety of rockets to finish assembling Amazon Leo, which used to be known as Project Kuiper. Just 10 of these liftoffs have occurred to date. The Atlas V has now flown six of them, SpaceX's Falcon 9 has launched three and Arianespace's Ariane 6 rocket has launched one.

The Ariane 6's tally will increase soon, however; it's scheduled to launch an Amazon Leo mission from French Guiana early on Wednesday morning (April 29).

The first four Atlas V Amazon Leo missions sent 27 of the broadband satellites skyward. Amazon Leo 5, which launched on April 4, boosted that number to 29 and set a new record for the heaviest payload ever flown by an Atlas V in the process — 18 tons.

Amazon Leo 6 tied that mark, as it also launched 29 Amazon Leo satellites to the final frontier.

Editor's note: This story was updated at 10:30 p.m. ET on April 27 with news of successful launch and satellite deployment.