Across
- 2. A large collection of stars held together by mutual gravitation and is separate from similar systems by large regions of space.
- 4. Any of the 88 groups of stars as seen from the earth
- 6. A celestial body that produces light and other radiant energy.
- 7. A celestial body that travels around the sun, usually in a highly eccentric orbit.
- 8. The sun along with the eight planets, moons and all other celestial bodies that orbit the sun.
Down
- 1. Italian astronomer and mathematician who was the first to use a telescope to study the stars
- 3. All the workings of intergalactic space, regarded as a whole.
- 4. The branch of astronomy that deals with the origin, development, and structure of the universe.
- 5. A cloud of interstellar dust or gas or both
- 6. It is a powerful and extremely bright stellar eruption.