This was a space probe to be sent to the Mun. Two stages with a booster package, unmanned but with battery packs and a science experiment. The launch did achieve orbit around the Mun, and most of the science was able to be broadcast back to Kerbin before the batteries ran out of power. The unit is currently orbiting around the Mun in a very high, pretty much polar orbit.
Maybe someday we can go and recover it.
