For over 150 years, humans have been trying to communicate with extraterrestrial life. Despite no definitive proof that anyone has tried to call us back, there has been a number of unusual signals and sounds that researchers are still trying to explain.
10. The Mystery Roar
9. The Chilled Out Sounds of Moon Miranda
8. The Eerie Sounds of Jupiter
7. Kepler Star Sounds
6. Radio Transmission SHGb02+14a
5. The Strange Sounds of Saturn
4. The X-Ray Signal
3. The Unsettling Sound of a Black Hole
2. The Parkes Radio Telescope Bursts
1. Arecibo Telescope Radio Bursts
