Doorbell, spacecraft signal:
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Spaceship flies by, laser gun shot
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Spacecraft engine noise
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Spacecraft signal, Doorbell
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Drone alien device
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Spaceship in flight, low frequency drone
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Cosmic wind
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Stop, engine start, Spaceship
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Space explosions
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Laser weapon shot
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Drone, Alert signal on a spaceship
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Cosmic sounds, black hole, time travel
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Space alien radio signal
★★★★★