[padelt]

Remembering the start of it and seeing the US pressuring enough to alter Galileo to be US-blockable[1] makes me feel old. Really excited though to see it finally getting usable.

[1] https://en.wikipedia.org/wiki/Galileo_(satellite_navigation)...

[Loic]

The cited Wikipedia page links to a wonderful SVG animation[0] comparing the orbit levels (do we say altitude?) and speed of GPS, GLONASS and Galileo.

[0]: https://upload.wikimedia.org/wikipedia/commons/b/b4/Comparis...

[joosters]

Is there a reason why GPS has an orbital period exactly half of that of a geostationary orbit?

[Rebelgecko]

It means that the satellite will be in the same place at the same time every day (give or take about a hundred miles per day of drift)

[digi_owl]

Old man De Gaulle may have been on the right track after all...