UFO Guide

What Is a UFO?

For centuries, humanity has observed strange phenomena in the sky that sometimes defy immediate explanation. Whether mysterious lights, objects displaying unusual movements, or unexplained sightings, UFOs continue to fascinate and intrigue people around the world. The term UFO, meaning "Unidentified Flying Object," refers to any aerial phenomenon that cannot be identified with certainty at the time of observation. While many cases eventually receive conventional explanations, some incidents continue to fuel debate among researchers, ufology enthusiasts, and the general public. From ancient accounts of mysterious celestial events to modern government investigations, UFO sightings occupy a unique place in the history of unexplained phenomena. Some cases have become famous worldwide and continue to raise questions decades after the events occurred. Today, UFOs inspire documentaries, books, films, television series, and countless theories. This guide brings together the most famous sightings, official investigations, remarkable testimonies, and the leading hypotheses associated with these mysterious phenomena.

Timeline of Major UFO Events

1947 — The Roswell Incident

Considered the starting point of modern ufology, the Roswell Incident remains one of the most famous and controversial UFO cases in history.

➡️ Read the complete Roswell guide

1955 — Area 51

Established during the Cold War, Area 51 became a global symbol of secret military programs and UFO-related theories.

➡️ Read the complete Area 51 guide

1976 — The Tehran UFO Incident

This Iranian military case is famous for the electronic anomalies reported by several pilots during interception attempts.

➡️ Read the complete Tehran UFO Incident guide

1980 — The Rendlesham Forest Incident

Often referred to as the "British Roswell," this series of sightings involving American military personnel remains one of Europe's most documented UFO cases.

➡️ Read the complete Rendlesham Forest guide

1989–1991 — The Belgian UFO Wave

Thousands of witnesses reported strange triangular objects flying over Belgium, creating one of the largest UFO waves in history.

➡️ Read the complete Belgian UFO Wave guide

1997 — The Phoenix Lights

Observed by thousands of people across Arizona, the Phoenix Lights remain one of the most famous mass UFO sightings of the twentieth century.

➡️ Read the complete Phoenix Lights guide

2020 — Pentagon UAP Reports

The release of military videos and official reports concerning Unidentified Aerial Phenomena (UAP) renewed global interest in UFOs.

➡️ Read our UAP guide

Why Do UFOs Fascinate People?

UFOs exist at the crossroads of science, mystery, and human imagination. They raise fundamental questions about our understanding of the universe and the possibility of other forms of life.

The main hypotheses include:

• Rare natural phenomena
• Misidentifications
• Secret military technologies
• Unknown atmospheric events
• The extraterrestrial hypothesis

UFOs in Modern Culture

Since the twentieth century, UFOs have occupied an important place in popular culture. They have inspired countless films, novels, video games, television series, and documentaries, helping make UFOs one of the greatest modern mysteries.

This guide invites you to explore the most famous cases, official investigations, and unexplained phenomena that continue to fuel debate around the world.

Credits and origin

Sources and Inspirations

This guide brings together information from the history of ufology, government investigations, civilian and military witness reports, and research dedicated to unidentified aerial phenomena.

Main inspirations:

• Roswell Incident
• Area 51
• Project Blue Book
• Phoenix Lights
• Rendlesham Forest Incident
• Tehran UFO Incident
• Belgian UFO Wave
• Declassified military reports
• Pilot and air traffic controller testimonies
• Modern ufology research

Purpose of the Guide

The purpose of this guide is to present the most famous UFO sightings, official investigations, major witness accounts, and the leading theories proposed to explain these phenomena. By exploring some of the most significant cases in the history of ufology, this guide helps readers understand the evolution of the UFO phenomenon, its cultural impact, and the ongoing debates surrounding unidentified aerial phenomena. Whether explained by natural events, secret technologies, misidentifications, or causes that remain unknown, UFOs continue to be one of the greatest mysteries of the modern era. Between fascinating testimonies, official investigations, and controversial hypotheses, they continue to capture public curiosity and inspire research around the world. Through this guide, discover some of the most famous UFO cases in history and explore the events, sightings, and investigations that have shaped generations of researchers, enthusiasts, and mystery seekers.