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An important evening, for a double astronomical event .. The evening of July 27th. The Great Opposition from Mars to Earth and the total eclipse of the Moon Large oppositions occur approximately every two years (26 months) and when Mars is at the minimum distance from the Sun (perihelion). [19659002InitsrevolutionaroundtheSunasourplanetisknownitdescribesatrajectory(orbit)thatlookslikea"flattenedcircle"calledellipsetakingabout365daysThistrajectorydescribedandresemblingaflattenedcircleimpliesthattheEarthisataminimumdistance(perihelion)oftheSuninJanuaryandatamaximumdistanceinJulyAlikeMarsinitscirclearoundtheSundescribesanellipsebutittakes687daysBycombiningthetwomovementsofrevolutionofMarsandEarthithappensthattheycanbeindifferentpointswiththeEarthinperihelionandMarsinaphelionandviceversa
This "meeting" if it happens in January with the Earth at the minimum distance from the Sun, the di stance with Mars will be about 100 million Km if on the contrary it happens as now, in July the distance between the two planets will be 56 million Km The launch of NASA's "Mars Insight" probe in May, which more or less corresponds to the Great Period of Opposition, will allow us to arrive on Mars in 7 months if it happened with Mars in aphelion, it would have taken three years. The next Great Opposition will take place in 26 months, and European, Chinese and American missions are planned, exploiting the distance even between the two planets. On July 27, the red planet Mars will appear "redder", but it will also be the Moon, due to a truly super-full eclipse.
It will be the longest total eclipse of this century, it will last one hour and 43 minutes. The phenomenon will be almost totally visible in Italy. The eclipse, that is to say the total or partial obscuration of one celestial body by another body, will take place between 21 and 30 and 23.13 of 27 July. The maximum darkening of the Moon is expected for 22 and 22, allowing clouds. The phenomenon of eclipse occurs because during its rotational movement around the Earth it can be or, in phase opposition (Moon-Earth-Sun) then on the opposite side to the Sun and we speak of full moon or, in conjunction (Earth-Moon -Sole) with the Moon in the middle and we are talking about the New Moon.
We speak of "Red Moon", which is correctly "total central eclipse" and occurs when the centers of the Sun, Moon and Earth are aligned. In this situation, the Moon is in the shadow of the Earth and part of the Sun's rays touch the Earth's surface and travel through the atmosphere as they touch the Moon giving it a reddish reflection. The phenomenon is due to the filter function of the atmosphere (refraction of sunlight), in which the blue component of the sun is "released" in the air and the sky is blue and the remaining part is red very concentrated. There are many theories to explain the origin of the moon. How was this formed? To this day, the birth of the Moon remains a mystery.
The theory of "Fission" speaks of the detachment of the Earth, which very quickly spun a certain amount of magma which then solidified and gave birth to the Moon. The theory of "capture" which, as a result of the gravitational field, has been captured, the Moon is formed elsewhere. The theory of "growth" that involves the simultaneous formation of the Earth and the Moon is then separated. The last theory badumes a "synesthesia" or conflict between two bodies that, as a result of transformations, would have generated the Earth and the Moon. None of the theories can explain some problems. One of them is for example the different density of the Moon compared to the Earth and the mystery of orbital inclination. The orbit of the moon and the orbit of the earth are not on the same level. The moon's orbit is tilted about 5 degrees from the Earth's orbit. The planes of the two orbits meet at two points called lunar nodes, and when the three bodies are aligned, the lunar eclipses occur. The end of the eclipse is scheduled for 1.30 on the 28th. The extraordinary phenomenon of July 28th will be possible to observe with clouds to the naked eye.
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