Unit 23 Week 4

2. A force that weighs down objects.
4. To move around something in a circular path.
5. A star in the center of the solar system that burns gas and gives off heat and light.
6. A craft that is reused to carry people back to Earth
9. An imaginary line objects in space follow as they move around a larger object.
10. An object that moves around EArth and sends messages and pictures to help us learn about space.
11. A group of stars, planets, dust and gas.
14. A tool that makes faraway objects look bigger and closer.

1. A large round object in space that follows a path and moves around a star like the Sun.
3. To spin on a center point.
5. A group of objects in space, including the Sun and everything that moves around it.
6. A giant ball of extremely hot gas that burns and gives off heat and light.
7. A person who travels into space.
8. Everything that can be seen, touched and sensed above Earth's atmosphere.
12. A large piece of rock or metal flying in space that is left over from the planets.
13. An object that moves around Earth that we see mostly at nighttime in phases.