aurora borealis

aurora borealis

an aurora ocurring in the northern hemisphere of the Earth

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품사: 명사
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분야/도메인: 천문학
카테고리: 일반 천문학
Company: Caltech
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aurora

물리; 대기물리학

Natural light displays in the sky, produced by the collision of solar wind particles and emission of photons from the Earth's upper atmosphere. The photons become ionized and ...

aurora

지리; 자연지리학

Multicolored lights that appear in the upper atmosphere (ionosphere) over the polar regions and visible from locations in the middle and high latitudes. Caused by the interaction ...

aurora

천문학; 일반 천문학

the light produced by excited atoms and ions in the upper atmosphere of a planet

aurora

천문학; 접근관리 시스템

A glow in a planet's ionosphere caused by the interaction between the planet's magnetic field and charged particles from the Sun.

aurora

역사; 로마신

perëndeshë e agimit në mitologjinë romake dhe poezinë latine.

vit julian

천문학; 일반 천문학

Exactly 365. 25 days, in which a century (100 years) is exactly 36525 days and in which 1900. 0 corresponds exactly to 1900 January 0. 5 (from the Julian-date system, which is ...

heliocentrik

천문학; 일반 천문학

Referring to the sun. A heliocentric orbit is one based on the sun as one of the two foci of the (elliptical) orbit (or as the center of a circular orbit); a heliocentric ...

datë juliane

천문학; 일반 천문학

The interval of time in days (and fraction of a day) since Greenwich noon on Jan. 1, 4713 BC. The JD is always half a day off from Universal Time, because the current definition ...

ekuinoks

천문학; 일반 천문학

Either of the two points (vernal, autumnal) on the celestial sphere where the ecliptic (which is the apparent path of the sun on the sky) intersects the celestial equator. Due to ...

shtrirje

천문학; 일반 천문학

Angular distance of a celestial object from the sun in the sky. In standard ephemerides, this is usually denoted by the Greek letter epsilon (or by the abbreviation "Elong. "). A ...

pjerrësi

천문학; 일반 천문학

One element of the astronomical coordinate system on the sky that is used by astronomers. Declination, which can be thought of as latitude on the earth projected onto the sky, is ...

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Viti i ri kinez

The most important of the traditional Chinese holidays, Chinese New Year represents the official start of the spring, beginning on the first day of ...