Science Vocabulary (No. 3)

4. Rocky objects revolving around the sun that are too small and numerous to be considered planets
7. A spacecraft that has various scientific instruments that can collect data, including visual images, but has no human crew
10. A gravitationally bound system consisting of a sun and the objects that orbit it
13. A large artificial satellite on which peopel can live and work for long periods
14. An attractive force between two masses by which a planet or other body draws object towards its centerr
16. A region in the solar system roughly located between the orbits of the planets Jupiter and Mars that contain millions of irregularly shared pieces of rock (asteroid) as well as ice and dust
17. Loose collection of ice, duts and small rocky particles, typically with a long, narrow orbit

1. A space telescope that was launched int low Earth orbit in 1990 and remains in operation
2. A large region in the solar system past Neptune where pluto and other dwarf planets orbit the Sun along with rocks, dust, and ice
3. All of space and time and their contents, including planets, stars, galaxies, and all other forms of matter and energy
5. Spacecraft that can carry a crew into space, return to Earth, and then be reused for the same purpose
6. An item that has uses on Earth, but was originally developed for use in space
8. A huge group of single sstars, star systems, star clusters, dust, and gas bound together by gravity
9. Streaks of light in the sky produced by the burning of a meteoroid in Earth's atmosphere
11. An astronomical body that orbits a star, is big enough to have enough gravity to force a sphereical shape, and is big enogh that its gravitiy has cleared away any objects of a similar size near its orbit
12. An object that revoles around another object in space
15. A palce that is empty of all matter