Guwahati, Sept. 7 -- India is set to witness a rare celestial event on Sunday, as a total lunar eclipse transforms the Moon into a stunning shade of red.

Often called a "Blood Moon," this event will last 82 minutes, making it one of the longest total lunar eclipses in recent years.

A total lunar eclipse occurs when Earth passes directly between the Sun and Moon, casting its shadow on the Moon.

Unlike a solar eclipse, which briefly darkens the day, the Moon during a lunar eclipse takes on a reddish hue. This occurs because Earth's atmosphere scatters shorter wavelengths (blue and green) but lets longer red wavelengths reach the Moon.

The 82-minute eclipse will create a striking contrast between the copper-colored Moon and stars, offeri...