astronaut – n. a person who travels in a spacecraft into outer space​

capsule – n. a small part of a spacecraft that is separate from the rest of the spacecraft and that is where people live and work​

commercial – adj. related to or used in the buying and selling of goods and services​

micrometeorites – n. a micrometeoroid that has entered the earth's atmosphere.​

spacewalk – n. a task or mission performed by an astronaut outside a spacecraft in space​

spacecraft – n. a task or mission performed by an astronaut outside a spacecraft in space​