Doorbell, spacecraft signal:
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Doorbell, spacecraft signal
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Spacecraft takeoff
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Spaceship, stop, engine start
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The drone and the silence of an alien device
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Laser weapon shot
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Spaceship in flight, low frequency drone
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Conversations of a small crowd of aliens
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Space alien radio signal
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Electronic communication signals, distress
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The sounds, The noise of the space station
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Charging a laser gun, shot
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Alert signal on a spaceship, drone
★★★★★