Obs. : 2017-08-26
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.845e+11
Venus      3.941e+11
Earth      3.630e+11
Mars       3.845e+11
Jupiter    3.678e+11
Saturn     3.666e+11
Uranus     3.856e+11
Neptune    3.630e+11
Pluto      3.649e+11