Comparing the physical characteristics of the worlds in our solar system (and beyond)
Mass, diameter, density, gravity, orbital characteristics, presented both in metric units and measured relative to Earth.
A comparison of all the asteroids and comets ever visited by spacecraft, up to date as of November 10 (when Deep Impact flew past Hartley 2). Vesta is not included.
A correctly scaled, reasonably correctly colored view of the largest bodies in the solar system.
Become a member of The Planetary Society and together we will create the future of space exploration.
LightSail 2 will launch aboard the SpaceX Falcon Heavy. Be part of this epic point in space exploration history!