Obs. : 2013-07-25
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.170e+11
Venus      3.950e+11
Earth      4.001e+11
Mars       4.170e+11
Jupiter    4.170e+11
Saturn     3.985e+11
Uranus     4.247e+11
Neptune    4.156e+11
Pluto      4.001e+11