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Moon phases and balances in the Northern Hemisphere in 2022

This less than 5-minute video shows us the moon phases and balances of 2022, and the month is compressed to 24 seconds.

In addition, this visual video shows the moon's orbital position, sub-Earth point, subsolar point, distance from Earth, and the named lunar craters near the moon's diurnal dividing line. Video from NASA SVS.

Two questions about the phases of the moon

When we look at the moon on Earth, the most attractive thing is the change of the moon phase, which is caused by the different angles of the sun when the moon orbits the earth.

Moon phases and balances in the Northern Hemisphere in 2022

The eight phases are New, Waxing Crescent, First Quarter, Waxing Gibbous, Full, Waning Gibbous, Third Quarter, and Waning Crescent.

Credit: NASA/Bill Dunford

We see on Earth each month, the moon changes from unlit to fully illuminated, a process made up of eight distinct, widely recognized phases since ancient times, known as the phases of the moon.

Question 1: A month cycle of about 29.53 days is called a synodic month. Have you ever wondered why the synodic moon has a longer orbital period around the Earth of about 27.32 days? This is because when the moon orbits the earth, the earth and the moon rotate around the sun at the same time, so the rendezvous period is a monthly phase cycle, know the result, do you know how this is calculated?

Question 2: The left picture was taken over the Pacific Ocean in eastern New Zealand on December 6, and the right picture is the moon phase based on NASA SVS simulation on December 6.

Moon phases and balances in the Northern Hemisphere in 2022

Credit:NASA

reference

[1]https://moon.nasa.gov/resources/54/phases-of-the-moon/

[2]https://svs.gsfc.nasa.gov/4955

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