Obs. : 2019-07-19
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.442e+11
Venus      3.405e+11
Earth      3.456e+11
Mars       3.442e+11
Jupiter    3.511e+11
Saturn     3.456e+11
Uranus     3.313e+11
Neptune    3.354e+11
Pluto      3.456e+11