This week, seventh-graders are learning about the difference between mass and weight. Mass is the actual amount of matter in an object, while weight is a measure of the pull of gravity on that mass. So if you were traveling in space, your mass would be the same-- you would still contain the same amount of matter-- but your weight would change, because the pull of gravity on your body would change.
To find out more, click here and calculate just how much you would weigh on the other planets of our solar system.
And if you want to feel teeny tiny, take a look at this.
