He points to Dallas Abbott's research identifying a potential impact in the Gulf of Carpentaria, north of Australia, dated to May of that same pivotal year. The object, estimated at 300 meters in diameter, would have been traveling at speeds up to 50,000 miles per hour. At that velocity and mass, the energy release would equal roughly a thousand nuclear bombs. To put the scale in perspective, 300 meters translates to about 492 feet, making it 280 times the volume of the Tunguska object. What makes this window even more remarkable is the convergence of evidence. May of that year shows up repeatedly, not just in cosmic impact data, but also in records of extreme volcanic activity. When multiple catastrophic signatures cluster around the same narrow time frame, it stops looking coincidental.