front 1 orbit | back 1 a regular, repeating path that one object in space takes around another one. |
front 2 telescope | back 2 an instrument that allows people to see distant objects. |
front 3 planet | back 3 large natural objects that orbit, or travel around, stars. |
front 4 sun | back 4 the star at the center of the solar system. |
front 5 rotation | back 5 when something turns or spins around a point located at its center. |