Across

2. A yellow dwarf star at the centre of our solar system, it accounts for 99.8% of our solar system's mass.

4. This describes the motion of spinning on an axis or centre, like a top.

6. These people rely on electromagnetic radiation detected by different types of telescopes to determine the location, composition, temperature, motions and magnetism of celestial objects.

9. This planet is the home of some of the fastest windstorms anywhere in the Solar System, with winds often reaching speeds of 2000 km/h.

11. Every December, meteors appear to spray out of this constellation. This event is called the "Geminid meteor shower."

12. This planet is named after the Roman goddess of love and beauty.

Down

1. This planet weights more than twice as much as all the other planets of our solar system combined.

3. An area in the sky where people have looked up and seen a pattern that is helpful in finding our way around the night sky.

5. The Milky Way a spiral disk containing several hundred billion stars is one of these.

7. An event in which the shadow of one celestial body falls on another celestial body.

8. This beautiful light show of red and green glowing overhead is caused by the interaction of solar materials with the Earth's atmosphere.

10. This planet was named after the Roman god of war, due to its blood-red colour.