Definition: the area outside the earth's atmosphere, where the planets and the stars are Level: B1
宇航员在国际空间站上研究太空环境。
Astronauts study the environment in ___space aboard the International Space Station.
科学家们正在研究如何在太空中种植食物。
Scientists are researching how to grow food in ___space.
火箭飞向了太空。
The rocket flew into ___space.
