Obs. : 2017-12-21
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.617e+11
Venus      3.617e+11
Earth      3.714e+11
Mars       3.646e+11
Jupiter    3.646e+11
Saturn     3.617e+11
Uranus     3.649e+11
Neptune    3.630e+11
Pluto      3.637e+11