亚马逊Leo完成Atlas 5收官发射 星座达396颗可启动商用

Amazon says the overnight launch of 29 satellites should clear the way for its Amazon Leo network to start offering commercial high-speed internet service from space this year, in direct competition with SpaceX’s Starlink network. United Launch Alliance’s Atlas 5 rocket sent the satellites into low Earth orbit from Cape Canaveral Space Force Station at 12:30 a.m. ET today (9:30 p.m. PT Wednesday). This was the last of eight Atlas 5 launches that Amazon reserved for its satellites. Going forward, ULA will use its next-generation Vulcan rocket to support Amazon Leo’s years-long deployment schedule. Amazon has also made launch reservations with Blue Origin, Arianespace and SpaceX. The latest liftoff boosts Amazon Leo’s constellation to 396 operational satellites. That will be enough to support continuous connectivity in the initial latitudes targeted for commercial service, according to Chris Weber, vice president of business and product for Amazon Leo. “Still lots of work ahead — including raising all these new satellites to their assigned altitude — but we’ve completed enough launches for initial service this year, and future missions just add coverage and capacity,” Weber said in a LinkedIn post. Amazon has been beta-testing the service for months with a select group of customers, but connectivity hasn’t been continuous due to sparse orbital coverage. Amazon Leo’s business plan calls for launching commercial service within a limited zone concentrated at mid-northern and mid-southern latitudes, and gradually expanding the service area as more satellites go up. “With hundreds of flight-ready satellites standing by at the Cape and a new, dedicated vertical integration facility ready to support Leo Vulcan 1 and subsequent missions, we have a clear path to increase launch and deployment cadence, helping us quickly expand network coverage following an initial service rollout later this year,” Melissa Wuerl, Amazon Leo’s director of launch systems, said in a statement released after the latest launch. Amazon hasn’t yet announced pricing for satellite broadband service. The first-generation constellation, consisting of 3,232 satellites, is due to reach full deployment in mid-2029 — and Amazon has received regulatory approval for an even larger second-generation constellation. When Amazon Leo begins commercial service, it will still trail far behind SpaceX’s Starlink satellite network, which has more than 10,000 satellites in orbit and 12 million subscribers. The s…