зенит

зенит

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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التحسين

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نوع المصطلح: اسم
المرادف (المرادفات)
مسرد المصطلحات
المجال / النطاق: علم الفلك
الفئة: المريخ
Company: NASA
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The phase when more than half (but not all) of the planet's side facing earth is illuminated by the sun.

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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 distance in degrees along the horizon, westward from the south point of the horizon, to the place where a vertical circle through the star or other object intersects the ...

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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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After separating from graphite, graphene is the world's thinnest and strongest material. This one-atom, carbon-based material can conduct electricity ...