One of the coolest things about APRS is the ISS has a beacon on it, so you can bounce messages to and from space using not much more than a handheld and a yagi.

One of the coolest things about APRS is the ISS has a beacon on it, so you can bounce messages to and from space using not much more than a handheld and a yagi. The more extreme space bouncing is "moonbounce" where the moon is used as a communications satellite, but that's not APRS, and certainly not doable with small equipment.