Genel olarak, dünyadaki suyun kuyrukluyıldızlarla çarpışmalardan geldiği düşünülür.
- It is generally thought that the earth's water came from collisions with comets.
Kuyrukluyıldızları ve asteroitleri karıştırma.
- Don't confuse comets and asteroids.
... comet which sailed over the battlefield of Hastings. It frightened the troops of King ...
... comet? No one understands comets, they're a mystery. They've been fascinating people ...