Because MKV and MP4 are containers, whereas VP8 is a codec... I'm more than half convinced that you're just trolling.

Really? Did someone pick it up and move it since the last time I was there?

So, serious answer to a stupid question:

Australia has had a long history in space exploration purely because it's an island on the opposite side of the world to the US and most other space age nations. This includes broadcasting the pictures back from the moon and being a hub for a large number of satellites.

Basically, you can't contact a satellite directly very easily from the US if the satellite is on the other side of the world. Australia's always going to have its place.