http://en.wikipedia.org/wiki/Speed_of_light http://en.wikipedia.org/wiki/Speed_of_light "astronomical units per day: 173" http://en.wikipedia.org/wiki/Astrono

http://en.wikipedia.org/wiki/Speed_of_light http://en.wikipedia.org/wiki/Speed_of_light "astronomical units per day: 173" http://en.wikipedia.org/wiki/Astronomical_unit#Examples http://en.wikipedia.org/wiki/Astronomical_unit#Examples "94 AU: Termination shock between Solar winds/Interstellar winds/Interstellar medium" I think astronomers would prefer data move back and forth faster, but they're used to waiting that long and more for things to happen.