Krypton

Superman. Image: meunierd / Shutterstock.com

Superman has to start worrying: has the formula for kryptonite been found?

In the background is the structure of a krypton atom in the classical state where 36 electrons are arranged in a kind of shells. The researchers measured the oscillations in the quantum state (front, in pink) on the outside of an ionized krypton atom and the oscillations that cause the atom to move. Photo: Max Planck Institute

Viewing moving electrons in real time