5 Most Mysterious Signals from Space

Unexplained signals originating in deep space, from phantom cosmonauts lost in space to the infamous Wow Signal. Presenting the 5 strangest broadcasts from space yet to be fully explained by science. Are these weird discoveries the result of something natural such as a neutron star or black hole, or are these strange sounds more human like lost Russian cosmonauts, or perhaps something alien? Watch to find out... Subscribe to Dark5 ►