Obs. : 2018-05-16
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.721e+11
Venus      3.574e+11
Earth      3.603e+11
Mars       3.668e+11
Jupiter    3.603e+11
Saturn     3.638e+11
Uranus     3.721e+11
Neptune    3.673e+11
Pluto      3.632e+11