Doorbell, spacecraft signal:
-
Spaceship in flight, low frequency drone
-
Faulty spacecraft engine
-
Laser gun shot, Spaceship flies by
-
Space station generator
-
Conversations of a small crowd of aliens
-
Space, space
-
Shot, Charging a laser gun
-
Room noise, Inside a spaceship
-
Electronic communication signals, distress
-
Cosmic wind
-
Take-off of two spaceships
-
Spacecraft crash landing
★★★★★