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Comet – a body composed of ice and dust
in orbit around the sun.
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BSL Sign Languages
of dark adaptation
(BSL Version)
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BSL Explanation
of dark adaptation
(BSL Version – Glossary of Astronomy)
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Glossary of Astronomy – dark adaptation
- comets are like “dirty snowballs”.
- a comet is really just a round chunk of ice and dust that have orbited the Sun.
- the ball-like part of the comet is called the nucleus, and its long “tail” is called the coma.
- the coma forms as tiny bits of the nucleus break down and fall off by heating from the sun.
- the solar winds sweep away this dust the whole comet appears to glow from the sun.
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List of BSL Astronomy – D
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- dark cloud
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