![Jason Major on Twitter: "Here's a size comparison of our Moon to Jupiter's moon Ganymede, the largest moon in the Solar System. Earth's Moon is our system's fifth largest moon after Ganymede, Jason Major on Twitter: "Here's a size comparison of our Moon to Jupiter's moon Ganymede, the largest moon in the Solar System. Earth's Moon is our system's fifth largest moon after Ganymede,](https://pbs.twimg.com/media/ERZipDjW4AA6Cbv.jpg)
Jason Major on Twitter: "Here's a size comparison of our Moon to Jupiter's moon Ganymede, the largest moon in the Solar System. Earth's Moon is our system's fifth largest moon after Ganymede,
The Planetary Society - Ladies and gentlemen, the not-planets of our solar system: planet.ly/NotPlanets | Facebook
![Jason Major 在Twitter 上:"Here's a size comparison of our Moon to Jupiter's moon Ganymede, the largest moon in the Solar System. The Moon is this system's fifth largest moon after Ganymede, Titan, Callisto, and Io respectively. https://t.co/lS13sCs29a ... Jason Major 在Twitter 上:"Here's a size comparison of our Moon to Jupiter's moon Ganymede, the largest moon in the Solar System. The Moon is this system's fifth largest moon after Ganymede, Titan, Callisto, and Io respectively. https://t.co/lS13sCs29a ...](https://pbs.twimg.com/media/E3TriwVXoAYqRV6.jpg)