Vsauce investigates how humanity tries to communicate with aliens. We have already send a gold platter with the Voyager missions and we have tried to explain who we are and where we are.
Nobody knows if we will ever find aliens or if aliens will find the space probes, but at least we tried. Vsauce explains the difficulties of sending a message to another culture or race when you don’t even know who they are and how they even speak. The video is totally worth your time.