Super-Poincaré algebra is a type of mathematical structure used in physics. It was developed by Henri Poincaré in the late 1800s and is used to understand the symmetries of Nature, which are the ways things remain the same when you look at them from different angles or move them in different directions. Super-Poincaré algebra is a special type of Poincaré algebra that includes something called spinors – which are mathematical objects that can also help us understand Nature’s symmetries. It's kind of like a mathematical Lego set that we can use to build models of how Nature works.