Comets

This is a comet going around the sun.

Comets are chunks of dirty ice, dust and grit.

Bright comets usually have two main tails, one of them is gas and the other is dust.

A comet's tail can be 100 million miles long.

Comets travel around the sun.

A comet is too small to see from Earth, except when it comes close to the sun.

A comet's tail always points away from the sun because solar wind blows it away.

Scientists think that there can be more than 100,000 comets going around the sun at once.

 

Halley's Comet

Halley's Comet was last seen in 1986. Every 76 years Halley's comet comes soaring through the sky.

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