Obs. : 2015-05-13
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.522e+11
Venus      4.543e+11
Earth      5.044e+11
Mars       4.482e+11
Jupiter    4.633e+11
Saturn     4.985e+11
Uranus     4.490e+11
Neptune    4.606e+11
Pluto      5.068e+11