Note that Google has invested in SpaceX around the time when Starlink was starting out, and that they're putting starlink ground stations at Google data centers.
Autonomous System, it has to do with internet traffic routing. Some real networking person might come and give a better definition than this, but my understanding is basically that where the "internet" is a series of connections between networks and protocols for routing traffic between them, one AS is (as bgp, the routing protocol, views it) one of those networks.
