Space crossword #2 (level 2)

Across

2. 2 Rock that fell from the sky. (9 letters)
5. 5 It goes around a planet. (9 letters)
6. 6 Blue planet far from the Sun. (7 letters)
7. 7 Round hole on the Moon. (6 letters)

Down

1. 1 Ball of ice with a long tail. (5 letters)
2. 2 The red planet. (4 letters)
3. 3 Earth is one. (6 letters)
4. 4 Very bright planet in the evening. (5 letters)