NASA: ISS HD

The NASA: ISS HD live feed is a peculiar kind of TV, hours of silent Earth passes interrupted only by the occasional crew announcement. If you need a screensaver with actual depth, this is it. Camera angles shift between four external views, and nighttime passes are stunning black with city lights. The audio feed from mission control adds an oddly calming bureaucratic murmur. There's no schedule, no commercials, no host. Just the planet rolling by at 17,500 mph. It's simultaneously the most relaxing and the most humbling thing you can stream. Most General tv United States channels can't make you feel like you're floating in a tin can 250 miles above the Gulf of Mexico, this one does. Downsides: long stretches of static Earth (if you're impatient), and the audio can be dead for hours. But that's the point. It's real time, not produced. For anyone who wants to watch NASA: ISS HD online, Tvivu carries it alongside standard offerings, though this is anything but standard.