Shaker added – in a statement to the Middle East News Agency today – that Mars at apogee will not be visible from Cairo, as it will reach the highest point in the sky during daylight hours and its height will not increase more than 10 degrees above the horizon at sunset, as the distance between Mars The sun is between 1.38 AU (at perihelion) and 1.67 AU (at aphelion) and this difference is more than 20%, which means that Mars receives 31% less heat from the Sun at aphelion compared to perihelion.
As for the phenomenon of planetary conjunction (Mars and Venus), he explained that it can be seen in Cairo, where the two planets will become visible at about seven and 15 minutes this evening at an altitude of 17 degrees above the western horizon, and then both set at eight and 41 minutes, i.e. one hour and 42 minutes after sunset.
Shaker pointed out that the two planets, Venus and Mars, will apparently reach the lowest distance between them, as each of them passes at a distance of less than half a degree of arc from the other, which is known as “conjunction”, pointing out that the luminosity of Venus (its -3.9) exceeds the luminosity of Mars Its value is 1.8 ) and both are located in the constellation Leo.
He stressed that the conjunction of the two planets can be seen with the naked eye when the sky is clear and dark, or through binoculars, and the two planets will be at a very close distance so that they can be seen together through the field of view of the telescope.