The moon is the most searched thing on the internet. What's the fascination? I recall being riveted to the TV when the first man set foot on the lunar surface. Guess what! There's more fascination coming our way. CBS News reports, the longest lunar eclipse of the 21st century is tonight (July 27th). First the good news. It will be fully visible for nearly 2 hours, according to NASA. It will take on a red hue, known as a "blood moon." Now, the bad news. You'll have to travel to South America, Africa, the Middle East, or Central Asia to see it.