The Demon Core: A Dangerous Ball of Metal!

This isn't just any ball; it's called the Demon Core! It's made of a special metal called plutonium, and it's about the size of a grapefruit. But don't let its small size fool you, this ball was super heavy, weighing as much as a bowling ball! It was made a long, long time ago, back in 1945, by scientists working on something called the Manhattan Project.

The Demon Core was created as a special part for a very powerful bomb. Scientists were testing it to see how close it was to being 'critical,' which means it could start a chain reaction. It was so important that it was almost sent to be used in a real bomb! But then, the war ended, and the Demon Core stayed behind for more tests.

Even though scientists were very careful, two accidents happened with the Demon Core. In both cases, scientists were doing experiments to see how close the core was to becoming critical. But by accident, it got too close! This caused a lot of radiation, and sadly, two scientists got very sick and passed away. Other people in the lab were also exposed to the radiation.

After the accidents, the scientists knew the Demon Core was too dangerous to keep around. So, in the summer of 1946, they melted it down. All the plutonium was recycled and used to make other important things. Even though the Demon Core itself is gone, the lessons learned from it helped scientists make things safer in the future.