Obs. : 2008-04-08
Planet     Ly alpha
Mercury    1.590e+11
Venus      1.568e+11
Earth      1.449e+11
Mars       1.475e+11
Jupiter    1.450e+11
Saturn     1.459e+11
Uranus     1.568e+11
Neptune    1.507e+11
Pluto      1.438e+11