India, Sept. 7 -- Several regions of the world, including India, will witness a rare celestial event on Sunday: a total lunar eclipse, also known as a "Blood Moon."

The "Blood Moon" will be visible across the country, Asia, parts of Africa, and Europe. However, people and enthusiasts on both American continents will not be able to witness the event.

On such an occasion, a question arises: What exactly is a "Blood Moon" or total lunar eclipse?

A total lunar eclipse, popularly known as a "Blood Moon," occurs when the Sun, Earth, and Moon align, causing Earth's shadow to fall on the Moon and cast it in a deep red hue. The sight of the "Blood Moon" has both intrigued and terrified humankind for centuries.

According to Ryan Milligan, an as...