Obs. : 2009-09-06
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.442e+11
Venus      3.337e+11
Earth      3.475e+11
Mars       3.411e+11
Jupiter    3.475e+11
Saturn     3.357e+11
Uranus     3.424e+11
Neptune    3.475e+11
Pluto      3.530e+11