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zenit

The point of the celestial sphere directly overhead, 90 degrees above the horizon, for any point on earth; it is the point where a plumb line extended upward would intersect the celestial sphere.

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Kalbos dalis: noun
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Pramonės šaka / sritis: Astronomy
Category: Mars
Company: NASA
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The invisible electromagnetic radiation beyond the violet end of the spectrum of visible light, of wavelengths ranging, roughly, from 4000 down to 400 angstroms.

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Astronomy; Mars

Mars is the fourth planet from the Sun. Mars' diameter is 6,790 km and takes 687 days to orbit the Sun. Mars is named after the Roman god of war. In Eastern Asian cultures Mars is ...