Rocket flight:
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Conversations of a small crowd of aliens
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Spacecraft signal, Doorbell
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Spaceship in flight, low frequency drone
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Spacecraft landing
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Shot, Charging a laser gun
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Conversations of a small crowd of aliens at
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Space, space
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Engine start, stop, Spaceship
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Cosmic sounds, time travel, black hole
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Alien device, work, start, stop
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Electronic communication signals, distress
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Space alien radio signal
★★★★★