Happy World UFO Day! While UFO sightings have been reported for decades, the 21st century has brought forth encounters backed by military-grade sensors, radar data, and official government releases. These incidents have shifted the conversation from fringe speculation to serious inquiry. Here are three of the most compelling modern UFO cases, each supported by credible evidence.

Start looking skyward - July 2 is World UFO Day! Held on July 2 every year in commemoration of the infamous 1947 Roswell UFO Incident, World UFO Day turns a spotlight on the endless and ever-growing phenomenon of UFO sightings all over the world. Are these UFOs secret government aircrafts? Extraterrestrial visitations? A little of both? While the true identity of UFOs is still hotly under debate, it cannot be denied that for over a century - and quite possibly in many centuries past - people have been witnessing unidentified flying objects in the skies.