NASA's MAVEN Arrives on Mars

journey – n. trip

atmosphere – n. the gases surrounding any star or planet

climate – n. the normal weather conditions of a place

acronym – n. a name made from a series of letters or parts of a group of words.

instruments – n. tools or devices designed to do something or to make something

orbit – v. to travel in space around a planet or other object; n. the path or way an object travels in space around another object or planet