The purpose of this report is to help inform the reader about Multi-Mission Radioisotope Thermoelectric Generator (MMRTG) that is delivering power to the Perseverance Rover that landed on Mars. Specifically speaking about the reliability, the makeup (GPHS), the importance, and how NASA’s Mission Directorates align. The Perseverance Rover will collect and document rock and sediment samples that will one day be returned to Earth, large portions of its time will be spent searching for signs of ancient microbial life, learning more about the planet’s geology and climate through time, and paving the way for human exploration beyond the Earth. The MMRTG on board the Mars Perseverance rover is a type of RTG that has its roots in 27 space missions (Multi-Mission Radioisotope Thermoelectric Generator (MMRTG), 2013), which uses a plutonium-238 source to generate 110 watts of electricity (“Electrical Power”, n.d.) the first year using the idea of thermocouples. This creates a reliable, long lasting flow of electricity to power Perseverance’s systems, charging the lithium-ion batteries, and heats the rover with thermal energy from the radioactive decay.