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The fuzzy, gaseous component of a comet's head.


A cloud of gas or dust in space.


A small body made of rocky and metallic pieces held together by frozen gases.


Small, irregularly shaped body formed by colliding matter.


A small rocky body, which can range in size


A small, solid particle that travels through space.


The luminous phenomenon observed when material enters the Earth's atmosphere and burns up.


Any portion that reaches the Earth's Surface.

Jovian Planet

The Jupiter-like planets, also known as gas giants. (farthest away)

Terrestrial Planet

any of the Earth-like planets. (closest to the sun)

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