Across
- 3. an object (such as a moon) that moves around a much larger planet
- 4. all humans considered as a group
- 5. an area where people have never lived before, that not much is known about
Down
- 1. the force that causes things to fall towards the Earth
- 2. a machine that is used to carry people or goods from one place to another
- 3. a vehicle that is used for travel in outer space