NASA‘s Curiosity Rover has taken another step forward in space exploration with the broadcasting of the first human voice on planet Mars. The voice of NASA administrator Charlie Bolden was sent from Earth to Curiosity on Mars and that message was broadcast on the planet before it was sent back to Earth. It’s the first time an audio recording was sent from our planet to another planet for broadcast. We don’t know yet if anyone (anything?) heard it up there on Mars but at least they know what we sound like now. Later today, the Curiosity Rover will broadcast, in the same way, a will.i.am song titled Reach for the Stars — that song will become the first piece of music ever broadcast on another planet. Take a listen to the audio message above and hear what was broadcast on planet Mars earlier today.