**Tags**

astronomy, celestial objects, earth and moon, Earth size, geometric connections, geometry, Harmoniae Mundi, learning, looking at the sky, Mercury and Earth size, Mercury orbit, Moon size, Saturn orbit, solar eclipses, square the circle, weird coincidences

> Part of the **Harmoniae Mundi** series (see the second part **here**) <

The sky is full of weird coincidences. The Moon has exactly the phenomenal size of the Sun, so that in solar eclipses it covers exactly the Sun’s disk.

In a weird way, the sizes of Mercury and Earth are also connected – not only with each other but also with the orbits of the two planets… The same happens with Earth and Saturn relative sizes.

On the other hand, the size of Earth and Moon are also interconnected so as to give the solution to one of the greatest problems in mathematics: the squaring of the circle… The dotted circles in the schema below have the same surface as the dotted squares.

Keep looking at the sky.

And remember. What you see as a coincidence, may not be one…