....................are huge rocky masses that fall from the space and reach the Earth's surface.

The mass of the biggest meteorite found up till now reaches.............. tons.

Comets, asteroids and meteors revolve around the..........

Comets revolve around the Sun in fixed.....................orbits.

The comet consists of................................

The head of the comet consists of a mixture of solidified gases, which are................. gases.

.................comet is the most famous one.

Halley's comet completes its orbit around the Sun each..............

What is this emotion?

All these can be found in my school except.