A 24 hour concert
it's not, but NASA's celebrating Earth Day in its own way, airing an hour of HD footage collected from various trips in space on NASA TV. A silent edition of the broadcast hit Friday morning, which will repeat between 6 a.m. and 8 a.m. Monday April 21, and on repeat from 6 a.m. until 8 p.m. on Earth Day, April 22 featuring commentary from NASA scientist Dr. Justin Wilkinson. You can catch the stream online, or the NASA TV channel if you have it, we hear that in HD you can totally see your house from there.
[Via Sun Herald