Астрономия - he branch of science that deals with celestial objects, space, and the physical universe as a whole.
космос -
космонавт, -a person who is trained to travel in a spacecraft.
позволять - admit (an event or activity) as legal or acceptable.
официант - a person who looks after the passengers on a ship, aircraft, or train and brings them meals.
автограф, - a signature, especially that of a celebrity written as a memento for an admirer.
становиться - begin to be.