Obs. : 2009-09-01
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.403e+11
Venus      3.373e+11
Earth      3.500e+11
Mars       3.389e+11
Jupiter    3.500e+11
Saturn     3.346e+11
Uranus     3.440e+11
Neptune    3.500e+11
Pluto      3.523e+11