Across
- 1. the fourth planet from the Sun – is a dusty, cold, desert world with a very thin atmosphere.
- 3. our home planet.
- 4. the star around which the earth orbits.
- 6. is a massive ball made mostly of hydrogen and helium. The farthest planet from Earth discovered by the unaided human eye
- 8. is the smallest planet in our solar system. It's just a little bigger than Earth's Moon.
- 9. is named for the ancient Roman goddess of love and beauty, who was known as Aphrodite to the ancient Greek, It's the only planet named after a female god.
- 10. is called a gas giant planet. Its atmosphere is made up of mostly hydrogen gas and helium gas, like the sun
Down
- 2. are giant balls of hot gas – mostly hydrogen, with some helium and small amounts of other elements.
- 5. one of two ice giants in the outer solar system Most of the planet's mass is made up of a hot dense fluid of "icy" materials – water, methane, and ammonia
- 7. Dark, cold and whipped by supersonic winds, giant, the eighth and most distant major planet orbiting our Sun. More than 30 times as far from the Sun as Earth