надир

надир

The point on the celestial sphere that is diametrically opposite the zenith, so that the zenith, nadir and center of earth are in one straight line. It is always 90 degrees below the horizon.

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Loại từ: noun
Từ đồng nghĩa:
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Ngành nghề/Lĩnh vực: Astronomy
Category: Mars
Company: NASA
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Transforming a hostile environment into one able to sustain human life; this includes a source of oxygen, water, plant life, and correct air pressure and temperature.

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The straight line, real or imaginary, passing through a rotating body and is the line about which that body rotates.

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The deflection of particles or radiation by scattering processes through angles greater than 90 degrees with respect to the original direction of motion.

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The amount of matter in a unit volume of a substance; usually the mass per unit of volume.

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