Strange Skies Before the Modern UFO Era

Three historical celestial events that puzzled witnesses for centuries

Long before the term “UFO” entered public vocabulary in the 20th century, people around the world reported strange phenomena in the sky. Historical records, pamphlets, and newspaper reports describe unusual aerial events that left witnesses shocked and confused.

Some researchers consider these events early examples of unexplained aerial phenomena, while historians and scientists often attribute them to rare atmospheric effects, religious interpretation, or optical illusions.

Three of the most famous pre-modern sightings occurred in Nuremberg, Basel, and Fátima.

1. The Nuremberg Celestial Phenomenon (1561)

On the morning of April 14, 1561, residents of Nuremberg in what is now Germany witnessed a dramatic spectacle in the sky. According to a printed broadsheet created by artist and printer Hans Glaser, hundreds of objects appeared near the rising sun.

Witnesses described spheres, crosses, cylinders, and crescent-shaped objects moving erratically above the city. Some accounts claimed that these shapes appeared to fight or collide with one another, giving the impression of an aerial battle.

The broadsheet illustration showed numerous round objects emerging from cylindrical shapes, darting across the sky. A large dark spear- or triangle-shaped object was also depicted. After the chaotic movement ended, some objects reportedly fell toward the ground in clouds of smoke beyond the city.

At the time, the event was interpreted as a divine warning or omen. Modern explanations suggest it may have been a rare atmospheric phenomenon such as sun dogs, halos, or optical effects caused by ice crystals in the atmosphere.

2. The Basel Celestial Phenomenon (1566)

Five years later, another unusual sky event occurred in the city of Basel in present-day Switzerland.

On August 7, 1566, residents reported seeing numerous dark, round objects moving rapidly across the sky. Contemporary pamphlets and illustrations described the objects as black spheres that seemed to fly, collide, and change direction above the city.

In some descriptions, the spheres appeared to turn reddish or fiery, as if glowing or burning while moving through the sky. Witnesses believed the strange objects were fighting with each other before eventually disappearing.

Like the Nuremberg event, this phenomenon was recorded in a printed broadsheet and widely discussed at the time as a supernatural sign. Today, historians often suggest the event could have been caused by unusual atmospheric optics, solar halos, or meteorological phenomena, although the exact explanation remains uncertain.

3. The Miracle of the Sun (1917)

One of the most famous sky phenomena of the early 20th century occurred on October 13, 1917 near the town of Fátima in Portugal. The event is widely known as the Miracle of the Sun.

Tens of thousands of people gathered in a field after three shepherd children claimed that the Virgin Mary would perform a miracle that day. Witnesses reported that after heavy rain, the clouds suddenly parted and the Sun appeared as a spinning, shimmering disk.

Many observers said the Sun zig-zagged, danced in the sky, and emitted multicolored light. Some even believed it appeared to move toward Earth before returning to its normal position. Estimates suggest that between 50,000 and 70,000 people were present at the event.

While many believers consider the event a religious miracle, scientists have proposed possible explanations such as optical effects from staring at the Sun, atmospheric diffraction, or mass perceptual phenomena.

A Mystery Across the Centuries

These three events occurred centuries apart, yet they share a common theme: large numbers of people witnessing unusual phenomena in the sky that were difficult to explain at the time.

Whether interpreted as religious signs, natural atmospheric effects, or unexplained aerial phenomena, such historical accounts demonstrate that humanity has long been fascinated by mysterious lights and objects in the sky—long before the modern age of UFO sightings began.