This site does not allow itself to be embedded. You can still read it on the original site — the toolbar below keeps your place in the directory.
The GPS for GPS. How does GPS know where a GPS satellite is? GPS uses quasars. The base GPS system can't just ask GPS, because GPS is supposed to provide the authoritative positioning data. It would be a catch-22. The answer is that the GPS system is anchored by quasars.
Comments
Nothing yet. Say the first thing.
Sign in to join the conversation.