Why Does Earth Have Only One Moon?

A physics expert explains why Earth has only one moon while other planets have hundreds. Why do some planets have

 Why Can We Still See the Moon’s Surface During a Total Lunar Eclipse?

Visibility of the Moon During a Total Lunar Eclipse If the Earth had no atmosphere, the moon would completely disappear

What is a “Blue Moon”?

The term “blue moon” is famous in folklore, often regarded as a rare and mysterious phenomenon. In fact, a blue