Obs. : 2017-03-18
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.646e+11
Venus      3.646e+11
Earth      3.649e+11
Mars       3.562e+11
Jupiter    3.649e+11
Saturn     3.676e+11
Uranus     3.598e+11
Neptune    3.721e+11
Pluto      3.685e+11