Across
- 3. the force that attracts
- 7. physical substance in general
- 8. a small rocky body orbiting the sun
- 9. cloud of gas and dust in outer space
Down
- 1. a system of millions or billions of stars
- 2. a gravitational field so intense that no matter or radiation can escape.milkyway
- 4. a in the sky object with a core of ice and dust
- 5. a large fixed glow point in the night sky
- 6. a celestial body distinguished from the fixed starsmoon the natural satellite of the earth