Obs. : 2013-12-03
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.051e+11
Venus      3.724e+11
Earth      3.906e+11
Mars       4.207e+11
Jupiter    3.903e+11
Saturn     4.150e+11
Uranus     3.811e+11
Neptune    3.695e+11
Pluto      3.857e+11