Obs. : 2013-05-12
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.599e+11
Venus      4.599e+11
Earth      4.432e+11
Mars       4.692e+11
Jupiter    4.539e+11
Saturn     4.535e+11
Uranus     4.857e+11
Neptune    4.684e+11
Pluto      4.432e+11