Mercury reaches its highest altitude in the dome of the sky … tonight


Reaches Mercury His Eastern Great Expansion today, Monday, May 17, 2021, and views with the naked eye towards the western horizon, like a star of fate after sunset and moving towards the beginning of the night, which is an ideal opportunity to photograph the sky of the Arab world

This is a great month to spot Mercury In the northern hemisphere, we all saw Venus, Mars or Jupiter shining in the sky, but not Mercury, despite the small size of this planet, but it is too bright to be observed with the naked eye, but we often do not notice it.

According to the Astronomical Society in Jeddah, Mercury The closest planet to the Sun is and most of the time obscured by its glare, which is why many people have never seen Mercury before, however, at specific times, the planet becomes visible.

Read also | Tonight, the rocky planets decorate the sky and can be seen with the naked eye

Recall the best time to monitor Mercury It is when the planet reaches its maximum angle from the sun, as seen from the earth, and this event is called the “greatest elongation” and it occurs every 70-40 days and is an interesting time for any fan of observing the sky.

There are two types of extensions – east and west, so when Mercury is east of the sun, it is an evening elongation, and when it is on the west side of the sun, it is a westerly morning elongation.

The maximum elongation angle of Mercury ranges between 18 degrees and 28 degrees east or west of the sun, and the reason for this difference is because Mercury’s orbit is not completely circular.

You can start searching for Mercury at sunset, where the planet will appear like a bright star in front of the constellation Taurus, and using the telescope you can see the phases of Mercury that resemble the phases of the moon, but you should not wait long, because Mercury will be at an altitude of 20 degrees above the horizon and will set in about an hour and a half. after Sun set .


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