Comet:
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Spacecraft engine noise
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Distress, Electronic communication signals
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Space wars, blasters, lasers
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Comet
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Doorbell, spacecraft signal
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Spaceship in flight, engine noise
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Space alien radio signal
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Space explosions
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Spacecraft landing
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Approach, shutdown, Jetpack
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Inside a spaceship, room noise
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Start, stop, Alien device, work
★★★★★