posted on Nov, 12 2014 @ 03:21 AM
Think of the math and realtime data processing.
Comet in orbit around Sun.
Rosetta in orbit around Comet.
Lander moving towards comet.
and you can only see and measure what happened 20 minutes ago.
Oh, and forgot; If you send it a command, it takes 20 to get there as well
Now you have to wait 40 minutes to see if the command worked!
edit on 12-11-2014 by charlyv because: content