I read a blog today where the author of one entry lamented the fact that there was not sound coming back with the pictures from Mars. He speculated that maybe it was harder to send sound data than video data. Understanding science thingies -- it really is important.
Having grown up with the low-resolution, grainy photos of early space mission, I am astounded at the quality of what is coming back from Curiosity.
7 of 9's phaser is set to...stunning.