Obs. : 2015-10-03
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.731e+11
Venus      4.520e+11
Earth      4.209e+11
Mars       4.520e+11
Jupiter    4.606e+11
Saturn     4.824e+11
Uranus     4.248e+11
Neptune    4.542e+11
Pluto      4.655e+11