Landau Damping is a phenomenon in plasma physics where waves in a plasma lose energy over time due to interactions with particles. When a wave travels through a plasma, it can cause some particles to gain energy while others lose it. This results in a net energy loss for the wave, leading to its gradual damping or attenuation. This effect is named after the physicist Lev Landau, who first described it in the 1940s. Landau damping is significant in various fields, including astrophysics and fusion research, as it helps explain how waves behave in different plasma environments.