perihelion

perihelion

The point in the orbit of a planet where it is nearest to the sun.

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Part of Speech: noun
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Industry/Domain: Astronomy
Category: Mars
Company: NASA
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Related terms

perihelion paraprak

Astronomy; General astronomy

The slow rotation of the major axis of a planet's orbit in the same direction as the revolution of the planet itself, due to gravitational interactions with other planets and/or ...

Argumenti i perihelion (ω, gjatësi e perihelion)

Astronomy; General astronomy

Angular distance (measured in the plane of the object's orbit and in the direction of its motion) from the ascending node to the perihelion point.

zenit

Astronomy; Mars

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 ...

topografi

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The configuration of a land surface, including its relief.

tetrahedral

Astronomy; Mars

A solid with four plane faces.

terraformim

Astronomy; Mars

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.

opozitë

Astronomy; Mars

The point in a planet's orbit in which it is closest to earth. When viewing a planet it will appear on the opposite side of the sky as the sun. Two bodies are in opposition when ...