| A | B |
|---|
| galaxy | a group of billions of stars forming one system |
| planet | a large astronomical body that orbits the Sun or another star |
| solar system | a star and all the planets, satellites, comets, etc., that revolve around it Words to know |
| aliens | imaginary creatures from outer space |
| barge | a large, strongly-built boat or ship for carrying freight or waste |
| hospitable | friendly; receptive |
| molten | made liquid by heat; melted |
| ore | rock containing enough of a metal or metals to make mining profitable |
| refrain | to keep yourself from doing something |
| universal | existing everywhere, for all purposes |
| version | a special form or variant of something |
| fortitude | courage in facing pain, danger, or trouble |
| repulsive | causing strong dislike or aversion |
