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Ivan Petricevic

Ivan Petricevic is an investigative journalist and researcher with more than a decade of experience covering ancient history, UAP phenomena, space, and science. He writes about space, science, and history for Večernji list and has appeared as an expert on Discovery Channel and History Channel. He founded Curiosmos, where he reports from primary sources, archaeological research, and field investigations.
A photograph of Pope Gregory XIII. Depositphotos.

In 1582, Ten Days Vanished From the Calendar

In the countries that first adopted the Gregorian calendar, Thursday, October 4, 1582, was followed by Friday, October 15. Ten dates were skipped to bring the calendar back into line…

An illustration of a UFO being followed by fighter jets. Depositphotos.

The Day a US Pilot Was Ordered to Shoot Down a UFO

According to secret files made public, two U.S. fighter planes were scrambled during the Cold War to shoot down an unidentified flying object (UFO). Their mission, however, did not go…