Across
- 1. huge, glowing balls of gases.
- 8. large natural objects that orbit, or travel around, stars.
- 9. a repeating path that one object in space takes around another.
- 11. space rocks and chunks of space metal that land on Earth
- 13. everything that exists—all matter and all energy—throughout space and time.
- 14. a group of stars in the night sky that make up a recognizable picture or pattern.
- 16. A push or pull on an object when it interacts with another.
- 17. any piece of comet, meteoroid, or asteroid that travels into Earth's atmosphere.
- 19. more or less everything outside the Earth's Atmosphere.
- 20. small, rocky bodies that orbit, or travel around, the sun.
Down
- 2. a jacket of gases that surrounds our planet.
- 3. A huge collection of gas, dust and billions of stars and their solar systems held together by gravity.
- 4. large objects made of dust and ice that orbit the Sun.
- 5. Those who study planets, the moon and the stars
- 6. an object that moves around a larger object.
- 7. happens when one object in space, like a planet or moon, passes through the shadow of another object in space.
- 10. an instrument that allows people to see distant objects.
- 12. a large natural object that orbits, or travels around, Earth.
- 15. a special kind of scientist that takes a spaceship to outer space to study things like asteroids, the earth's atmosphere and the moon.
- 18. The force that pulls objects towards the ground.