[nomilk]

They're really moving. I watched one go from Cape York to a similar latitude as Tasmania - about 4000km - in around 23 seconds. So about 600,000km/hr; around 20x faster than ISS (28,000km/hr). I have no idea why that speed was chosen, or if other speeds would work, just found it interesting.

[mkl]

For near-circular orbits like this, speed controls altitude [0] [1]. 600,000km/hr is way faster than Earth escape velocity, so anything that fast won't be orbiting Earth.

[0] https://science.howstuffworks.com/satellite6.htm

[1] https://en.wikipedia.org/wiki/Orbital_speed#Tangential_veloc...

[modeless]

The default visualization speed is 16x real time.

[nomilk]

Oh, so it is, (I see now 'live' is available by clicking on that option (top right). Thanks for the correction.