From enjoying a movie on a hotel room TV to hearing an announcement in an airport security line, audio speakers are a subtle necessity for a smooth and pleasant trip.

BBC: 3D audio may revolutionise travel

But there were signs early on that the trip would not be smooth.

CNN: Miraculous survivors: Why they live while others die

If Glenn was rattled by last week's lift-off he didn't say, but from the ground, the trip to orbit looked smooth.

CNN: Victory Lap

There were elaborate wooden playgrounds in the backyards and mini satellite dishes on every roof, and each driveway was a smooth carpet of blacktop and there wasn't a sidewalk crack to trip over because there were no sidewalks, and each house had a garage that was so oversized it could have been its own house.

NPR: Chapter 1