#### AlexandrKushnirtshuk

• 45
• Alexandr Kushnirtshuk (1984.12.04), Ukraine, Lutsk
##### Moon size. Calculation and confirmation.
« on: June 09, 2021, 10:40:08 AM »
The duration of an eclipse is directly proportional to the size of the object, all other things being equal (distance and speed). The duration of the total phase of a solar eclipse is 7.5 minutes (the Moon completely covers the Sun for 7.5 minutes). The duration of the total phase of the lunar eclipse is 108 minutes (the Earth completely covers the Sun for 108 minutes). With the same distance between the Moon and the Earth. At the same speed of the Moon (the orbit of the Moon moves with the speed of the Earth). The diameter of the Earth is 12,742 km. Therefore, the diameter of the Moon can be calculated using the following formula: 12 742 * (7.5 / 108) = 885 km. The official diameter of the Moon is 3,474 km. Moreover, the result of calculating the diameter of the Moon quite accurately coincides with the size of the track between South America and Antarctica (875 km. + - 25 km.), which confirms the calculation and minimizes probability of a simple coincidence.
Alexandr Kushnirtshuk (1984.12.04), Ukraine, Lutsk

#### AlexandrKushnirtshuk

• 45
• Alexandr Kushnirtshuk (1984.12.04), Ukraine, Lutsk
##### Re: Moon size. Calculation and confirmation.
« Reply #1 on: June 09, 2021, 03:03:58 PM »
Earth and Moon to scale. The shadow of the moon on the surface of the Earth during a solar eclipse (view from space). The size of the shadow is more consistent with an object with a diameter of 3,500 km., or 850 km.?
Looking Back at Earth - Total Solar Eclipse from the Perspective of Space - NASA photo
https://ecozoictimes.com/looking-back-at-earth-total-solar-eclipse-from-the-perspective-of-space-nasa-photo/

Alexandr Kushnirtshuk (1984.12.04), Ukraine, Lutsk