Here's a first look at the Android Satellite Pointing UI.
While texting with emergency services via satellite, you will need to keep your phone pointed at the satellite. And Google has prepared a special UI for this purpose.
To connect via satellite, you need to "move your phone to center the sate...
To connect via satellite, you need to "move your phone to center the satellite in the circle".
I'm guessing you need to have a satellite phone first, the way this is written, some people might think normal phones can connect via satelite, which is not the case.