How will an astronauts weight and mass change on the moon?

An astronaut's mass remains constant regardless of location, as mass is a measure of the amount of matter in an object. However, their weight will change on the Moon due to its weaker gravitational pull, which is about one-sixth that of Earth's. This means the astronaut will weigh significantly less on the Moon, even though their mass stays the same. For example, if an astronaut weighs 180 pounds on Earth, they would weigh only about 30 pounds on the Moon.