perihelio

perihelio

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

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Kalbos dalis: noun
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Pramonės šaka / sritis: Astronomy
Category: Mars
Company: NASA
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argumento del perihelio (ω, longitud del perihelio)

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.

Marte

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 ...

Fobos

Astronomy; Mars

The larger and innermost of the planet Mars' two moons. Phobos was discovered by Asaph Hall on August 17, 1877. In Greek mythology, Phobos was the son of Ares (Mars) and Aphrodite ...

radiación ultravioleta

Astronomy; Mars

The invisible electromagnetic radiation beyond the violet end of the spectrum of visible light, of wavelengths ranging, roughly, from 4000 down to 400 angstroms.

solsticio de invierno

Astronomy; Mars

The position on the ecliptic occupied by the sun about december 22 when it reaches its greatest southerly declination.

rayos X

Astronomy; Mars

Very short wavelength radiations beyond the ultraviolet in the spectrum, which are about one ten-thousandth as long as the visible violet and are extremely penetrating.

cenit

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 ...

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Pramonės šaka / sritis: Holiday Category: Observances

Día de Steve Jobs

Fue propuesto por la agencia digital de publicidad Studiocom, el día de Steve Jobs es en celebración de la grandeza que Jobs alcanzó durante su vida. ...