"Our Solar System": HTML5 Crossword

Across

2. What is the name of the "ninth planet" of the Solar System that is not a planet any more now? (5,0)
4. What was the Goddess Venus Patron of? (6,0)
5. This Planet has got its own flag that is red,green and blue (4)
12. What does the short form E.S.A. stand for? (8,5,6,0)
13. It is so light that it could float on water (6,0)
15. This planet is Earth twin planet, but gone wrong (5,0)
16. What is the first planet from the Sun? (7,0)
17. How many planets are there in the Solar System? (5,0)

Down

1. On 22nd March it is the World .....day (5)
2. This rocket has been sent to Mars recently in search of life (6,0)
3. She is one of the most famous astronauts ever! (21)
6. This satellite was sent to Mars on 14 March 2016 (13,0)
7. Who wrote the "Martian Chronicles"? (3,8)
8. What's the fifth planet from the sun? (7,0)
9. Miranda, Ariel, Umbriel, Titania, and Oberon are 5 of its 27 satellites (6)
10. It is the acronym of National Aeronautics and Space Agency (4,0,0)
11. In Mithology he was known as the God of the seas (7,0)
14. It is called the blue planet (5)