Obs. : 2013-09-08
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.567e+11
Venus      3.605e+11
Earth      3.760e+11
Mars       3.701e+11
Jupiter    3.698e+11
Saturn     3.702e+11
Uranus     3.611e+11
Neptune    3.697e+11
Pluto      3.863e+11