Next month, the world will witness the longest total lunar eclipse of the 21st century, according to reports. The eclipse, which will last one hour and 43 minutes, will also feature a "blood moon" — which is a non-scientific term used to refer to the red tinge on a fully eclipsed Moon.

The event on the intervening night between 27 and 28 July will also outlast the Super Blue Blood Moon that occurred in January by nearly three-quarters of an hour, The Express reported.

"A partial eclipse precedes and follows the century's longest total lunar eclipse, each time lasting one hour and six minutes. So, from start to finish, the moon takes nearly four hours to cross the Earth's dark umbral shadow," the report quoted astronomer Bruce McClure as saying.