Obs. : 2018-06-30
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.557e+11
Venus      3.562e+11
Earth      3.488e+11
Mars       3.417e+11
Jupiter    3.518e+11
Saturn     3.475e+11
Uranus     3.468e+11
Neptune    3.377e+11
Pluto      3.436e+11