What do you call the gas cloud that surrounds the nucleus of a comet?

The _____ is the head or solid part of a comet.

A comet is a lump of frozen gas, dust, and _____ that orbits the Sun.

This is a comet's long ribbon-like trail of dust and gas that always points away from the sun.

This is a small piece of rock or metal that travels through space outside of Earth's atmosphere.

Comets orbit the sun in a(n) _______.

Astronomers think that comets come from deep space from the ____________.

________ are very large chunks of rock or metal that orbit the Sun.

This is a piece of rock or metal that enters Earth's atmosphere and is often called a shooting star..

This is a piece or rock or metal that fall onto a moon or planet.

Small pieces or rock or metal that break off of an asteroid are called ______.

What results when a meteorite hits a planet or moon?

Earth isn't pocked with craters from meteorites like the moon because ______.

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