Obs. : 2009-08-26
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.466e+11
Venus      3.440e+11
Earth      3.510e+11
Mars       3.446e+11
Jupiter    3.508e+11
Saturn     3.466e+11
Uranus     3.487e+11
Neptune    3.508e+11
Pluto      3.556e+11