Difference between mass and weight

In every solar system, you have the same mass, but different weight. how to search weight you just have to multiply the mass with acceleration of gravity in the spesific place in solar system.

Mass is a measure of how much matter an object has. Weight is a measure of how strongly gravity pulls on that matter. Thus if you were to travel to the moon your weight would change because the pull of gravity is weaker there than on Earth but, your mass would stay the same because you are still made up of the same amount of matter