Obs. : 2017-04-03
Planet	Ly alpha (photons/cm^2/sec)
Mercury    9.510e+11
Venus      9.272e+11
Earth      8.859e+11
Mars       9.549e+11
Jupiter    8.924e+11
Saturn     8.911e+11
Uranus     9.459e+11
Neptune    9.204e+11
Pluto      9.044e+11