Obs. : 2008-09-26
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.512e+11
Venus      3.512e+11
Earth      3.450e+11
Mars       3.512e+11
Jupiter    3.525e+11
Saturn     3.377e+11
Uranus     3.434e+11
Neptune    3.458e+11
Pluto      3.545e+11