Launched in 1977, the Voyager space probes are currently drifting through our Heliosheath. This is what we call the outermost layer of the heliosphere, the immense magnetic bubble that contains our solar system. As of today, Voyager 1 is more than 117 astronomical units (AU)away from the Earth, while Voyager 2 is more than 96 AU away (current distances updated here). They each carry the Voyager Golden Records, which feature a number of scenes, music, sounds and greetings from Earth. Claire L. Evans produced the following video for the 2010 World Science Festival, which compiles the 55 earth greetings contained on the disc. Let's watch:

Space Music: Symphonies of the Planets

In this Space Music post, we'll discuss "Symphonies of the Planets," the five-volume collection of ambient space drone music released in 1992 by Lasterlight Records. Plus we'll also discuss new-age nerd goddess Fiorella Terenzi, the glittering Italian astrophysics diva that Time Magazine dubbed a cross between Carl Sagan and Madonna. Cosmic mystery AND European sex appeal? Yep, its all in this epic doubleheader of a post.