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The greatest elongation of a given inferior planet occurs when this planet's position, in its orbital path around the Sun, is at tangent to the observer on Earth. Since an inferior planet is well within the area of Earth's orbit around the Sun, observation of its elongation should not pose that much a challenge (compared to deep-sky objects, for example).
This article is a list of notable unsolved problems in astronomy. Problems may be theoretical or experimental. Problems may be theoretical or experimental. Theoretical problems result from inability of current theories to explain observed phenomena or experimental results.
The cosmic distance ladder (also known as the extragalactic distance scale) is the succession of methods by which astronomers determine the distances to celestial objects.
Venus on 26 October 2015 at her greatest western elongation in the constellation Leo close to Jupiter and Mars. Magnitudes: Venus: -4,5 mag, Jupiter: -1,8 mag, Mars: +1,8 mag, Leo: +4,1 mag In astrology , an aspect is an angle a planet makes to another planet or point of astrological interest.
This glossary of astronomy is a list of definitions of terms and concepts relevant to astronomy and cosmology, their sub-disciplines, and related fields. Astronomy is concerned with the study of celestial objects and phenomena that originate outside the atmosphere of Earth. The field of astronomy features an extensive vocabulary and a ...
In astronomy, a transit (or astronomical transit) is the passage of a celestial body directly between a larger body and the observer. As viewed from a particular vantage point, the transiting body appears to move across the face of the larger body, covering a small portion of it.
The sixth house within astrology governs work, health and routine. But what is a house?A person's natal chart — or any astrology chart, for that matter — is divided into 12 sections, also ...
The Moon's orbit is inclined slightly with respect to the ecliptic (see orbit of the Moon) meaning any star with an ecliptic latitude between –6.6 and +6.6 degrees may be occulted by it. [1] Three first magnitude stars appear well within that band – Regulus , Spica , and Antares – meaning they may be occulted by the Moon or by planets. [ 2 ]