Obs. : 2019-08-18
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.471e+11
Venus      3.412e+11
Earth      3.504e+11
Mars       3.412e+11
Jupiter    3.430e+11
Saturn     3.453e+11
Uranus     3.538e+11
Neptune    3.504e+11
Pluto      3.453e+11