People claim to videotape UFOs in the sky above Earth. They also spot unusual-looking objects in NASA camera feeds at the International Space Station.

Now, a growing number of individuals insist they're using their telescopes and cameras to reveal UFOs around the moon, according to the International Business Times.

Many odd things have been seen by amateur and professional astronomers on the moon over decades, and YouTube affords the opportunity to look at alleged UFOs flying across, toward and away from our nearest astronomical neighbor.

Look at this group of videos of alleged UFO activity around the moon

Part of the problem with most videos like these is the lack of specific, helpful information to accompany the visual "evidence," so it's difficult to know what's real and what was created from a clever software app.

But, lunar anomalies are not new phenomena. They've been reported by astronomers going back to the 1700s. Strange things seen by the scientists of centuries past included mysterious bright lights or glowing spots on the moon. In 1869, Great Britain's Royal Astronomical Society conducted a study of unusual moving lights. After numerous observations of this activity, the lights just turned off.

On July 29, 1953, New York Herald Tribune science editor John J. O'Neill noticed, through his telescope, a huge bridge-like object spanning 12 miles in the lunar area known as Mare Crisium. Other observers, including Hugh Percy Wilkins of the British Astronomical Association, confirmed O'Neill's sighting on the lunar surface. The object that became known as O'Neill's Bridge, was eventually thought to be nothing more than a combination of lights and shadows.

The history of the Apollo flights to the moon in the late 1960s into the 1970s included countless tabloid stories of supposed UFO encounters experienced by the astronauts.

Apollo 11 astronaut Buzz Aldrin describes a UFO that accompanied them en route to the moon in 1969