Spacecraft hatch opens, closes:
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Low frequency drone, Spaceship in flight
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Space explosions
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Conversations of a small crowd of aliens at
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Spaceship flies by
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Faulty spacecraft engine
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The drone and the silence of an alien device
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Conversations of a small crowd of aliens
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Drone, identification, Spaceship flies by
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Rocket flight
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Drone, Alert signal on a spaceship
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Space station generator
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Cosmic sounds, black hole, time travel
★★★★★