>>> "%e" % (Pluto.orbit.periapsis - Earth.orbit.apoapsis) '4.272109e+12' >>> "%e" % (Mars.orbit.periapsis - Earth.orbit.apoapsis) '5.455552e+10' >>> "%e" % (Moon.orbit.periapsis) '3.631042e+08' >>> "%e" % Earth.radius '6.371000e+06'
Earth-Mars: 54.6 Gm = 54.6e6 km = 33.9e6 miles
Earth-Moon: 363 Mm = 363e3 km = 226e3 miles
Earth radius: 6.37 Mm = 6.37e3 km = 3.96e3 miles