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spacecraft, spaceship
He is interested in the design of spacecraft.
outer space
He is excited about living in outer space.
space debris
The problem of space debris could potentially have a significant impact on future space development.
(astronomy, physics) cosmic ray
The study of cosmic rays may hold the key to unraveling the mysteries of the universe.
cosmology
He proposed a new theory about cosmology.
astronautics
He is majoring in astronautics.
(physics, cosmology) the multiverse
The theory of the multiverse is particularly interesting in the field of physics.
aerospace
He is majoring in aerospace engineering.
a space suit
He walked on the moon wearing a space suit.
space exploration
I am interested in space exploration.
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