In the last several e-mails we've defined mass and weight as follows:

• Mass is a measure of resistance to change in motion

• Weight is the force of attraction between an object and the Earth

and left you with the following question . . .What happens if we travel to another celestial body?

• Does the definition of weight  change?

• Does the weight of an object on another celestial body change compared to its weight on Earth?

• Does the mass of an object on another celestial body change compared to its mass on Earth?

We take virtual field trips to the moon and Jupiter to find out ...

What's The Matter Part IV