The Kepler Conjecture is a mathematical hypothesis proposed by the astronomer Johannes Kepler in 1611. It suggests that the most efficient way to pack spheres, such as oranges in a grocery store, is in a pyramid-like arrangement. This means that each layer of spheres sits in the gaps of the layer below, maximizing the use of space. The conjecture remained unproven for centuries until it was finally confirmed by mathematician Thomas Hales in 1998. Hales used advanced computer calculations to demonstrate that the pyramid packing method is indeed the most efficient way to arrange spheres in three-dimensional space.