Space Station >> Space Station Glossary
Space Station Glossary O
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
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Observable Universe:
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The piece of the entire space that could be seen from Earth.
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Opacity:
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The degree to which light is banned from passing through an object or a substance. Opacity is the conflicting of transparency. As an object’s cloudiness increases, the amount of light transitory through it decreases. Glass, for example, is clear and most clouds are opaque.
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Optical Telescope:
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A telescope, which gathers and magnifies visible light. The two basic types of visual telescopes are refracting (using lenses) and reflecting (using mirrors). The Hubble Space Telescope is an instance of a reflecting telescope.
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Ozone Layer:
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A region in the higher atmosphere that has high concentrations of ozone (triatomic oxygen, 03). The ozone layers defend the Earth by fascinating the Sun’s high-energy ultraviolet radiation.
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