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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.
Hubble image of galaxy cluster Abell 1413

How Do Scientists Measure Distance in Space?

How do scientists measure distance in space? They use a chain of methods rather than one universal measuring tape. Radar can reach planets. Parallax works for nearby stars. Farther out,…

Cross-section of tree showing annual growth rings

How Does Dendrochronology Date Ancient Buildings?

How does dendrochronology date ancient buildings? By reading the growth history recorded inside wood. In regions where trees respond to changing seasons, each year leaves a pattern of wide and…

Close-up scientific image of vortices moving along a magnetic boundary on the Sun

Scientists Finally See Tiny Vortices on the Sun

The Sun’s surface is not a smooth, glowing shell. It is a restless layer of boiling plasma, threaded by magnetic fields and covered in motions that are far too small…

Jupiter's Great Red Spot photographed by a NASA spacecraft

Why Does Jupiter Have a Great Red Spot?

Jupiter’s Great Red Spot is a storm system wider than Earth, turning inside the planet’s cloud tops for centuries of recorded observation. It is not a solid mark on the…