VolumeAnother way to measure the size of a planet is to look at its volume - how much space it takes up. Again, we'll use the Earth to measure by. Take a look at the table below. | Mercury | Venus | Earth | Mars | Jupiter | Saturn | Uranus | Neptune | Pluto | | 0.06 | 0.85 | 1.0 | 0.15 | 1408.38 | 846.34 | 64.36 | 58.54 | 0.006 | We can see that if Jupiter were hollow, you could fit over 1400 Earths inside of it! Notice that some of the planets are smaller than the Earth; you could fit only a fraction of the Earth inside of them. Check it out! Look at the table of volumes. What is the next planet larger than the Earth? Click your answer below. | Intro | Diameter | Volume | Mass | | Surface Gravity | And Beyond... | NASA Ames Educator Resource Center Content and Web Development: Brian H. Day Responsible NASA Official: Donald James |