🔭 Myles Standish, a mathematical astronomer and a former professor at Yale University, said this similarity is unique among the planets and moons that make up our local family in space, our solar system. In other words, it doesn’t occur with any other planets and moons in our immediate neighborhood of space. But there may be millions or billions of undiscovered solar systems.⁠ So what are the odds of the moon and sun appearing nearly the same size as Earth? No one knows.⁠ ⁠ By the way, although it’s fascinating that they are so similar, the sun and moon aren’t always the same size as seen from Earth. Moons and suns are rarely the same size in terms of a planetary point of view. The moon’s distance from Earth varies slightly over a single month. So the moon’s apparent size in our sky is always changing.⁠ ⁠ For part of every month, the moon is in a far part of its orbit from Earth. At such times, it isn’t big enough to cover the sun completely. If an eclipse happens, then the outer part...