WASHINGTON D.C. — Conspiracy theorists and doomsday preachers are warning that the end is nigh just because the moon is turning red this week.

NASA reports that this century's longest lunar eclipse is set to go down on July 27, and its getting some people's panties in a tizzy.

Friday's total lunar eclipse will see the sun, Earth, and moon in perfect alignment with each other. When this happens, the moon moves directly within the Earth's umbra and turns a dark red — a rare astronomical phenomenon known as the blood moon.

The ominous name has given rise to all manner of doomsday predictions. One YouTube preacher claims it's a sign of the second coming, while a new age earthquake researcher predicts a magnitude 7 quake could strike that day.

Of course, neither of these claims are backed up by real science, even though both claim to be "factual". Clearly, that word doesn't mean what they think it means.

The blood redness is really just from being hit by sunlight bent by the Earth's atmosphere. Nothing creepy or satanic about it.

At one hour and 43 minutes, sure, it'll be the longest lunar eclipse of the 21st century so far, but that's hardly proof of imminent destruction.