Alien conversation:
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Spacecraft launch, Countdown
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Spacecraft flies up, lands
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Stop, Spaceship, engine start
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Spaceship in flight, low frequency drone
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Alien conversation
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Spacecraft engine noise
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Laser weapon shot
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Jetpack, shutdown, approach
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Doorbell, spacecraft signal
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Space station generator
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Drone alien device
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Spaceship flies by, identification, drone
★★★★★