Obs. : 2018-06-11
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.274e+11
Venus      4.306e+11
Earth      4.320e+11
Mars       4.158e+11
Jupiter    4.355e+11
Saturn     4.212e+11
Uranus     4.251e+11
Neptune    4.125e+11
Pluto      4.212e+11