nebeski ekvator

nebeski ekvator

The great circle of the celestial sphere all points of which are 90 degrees from the poles. It is the plane of the earth's equator projected onto the celestial sphere.

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Industry/Domain: Astronomy
Category: Mars
Company: NASA
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ekvator

Geography; Geography

Ekvator je zamišljena kružnica oko Zemlje na pola puta između sjevernog i južnog pola.

zimski solsticij

Astronomy; Mars

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

proljetna ravnodnevica

Astronomy; Mars

The position on the celestial sphere occupied by the sun on or about march 21 when its path on the ecliptic crosses the celestial equator going from south to north. This point is ...

ultraljubičasto zračenje

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.

Mars

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 ...