The video explained "orbit" as the curved path an object follows, like how the Earth orbits the Sun. This definition aligns with the vocabulary context in the lesson.
"Trajectory" refers to the path a moving object, such as a rocket, follows. The video used this term when describing how rockets are directed toward specific destinations.
The video explained that "cosmonaut" is the term used for astronauts in Russia, emphasizing differences in terminology based on regions.
Gravity was described in the video as the natural force keeping objects on the ground and influencing their movement in space.
The video used "module" to refer to sections of spacecraft, such as living quarters or control areas, designed for specific purposes in missions.