Comet ISON

Video

QUIZ

1. Where was Comet ISON lived before it became close to the sun?
2. What’s the size of Comet ISON?
3. Who discovered Comet ISON and when?
4. Why do this comet’s tail always points away of the sun?
5. Why do it named ISON?
6. When did Comet ISON pass through Mars?
7. When did Comet ISON pass through Earth?
8. When would Comet ISON become a sun-grazing object?
9. When was Comet ISON passed through the perihelion?
10. Why did Comet ISON die?