Obs. : 2017-12-23
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.690e+11
Venus      3.682e+11
Earth      3.688e+11
Mars       3.721e+11
Jupiter    3.721e+11
Saturn     3.682e+11
Uranus     3.663e+11
Neptune    3.636e+11
Pluto      3.669e+11