The drone and the silence of an alien device:
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Approach, Jetpack, shutdown
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Space wars, blasters, lasers
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Comet
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Cosmic sounds
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Engine noise, Spaceship in flight
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Drone, Spaceship flies by, identification
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Doorbell, spacecraft signal
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Inside the spacecraft, technical compartment
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Spacecraft landing
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Spaceship takes off, hyper, gaining power
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Rumble of a spaceship, hyper, gaining power
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Spacecraft flies up, lands
★★★★★