Obs. : 2008-09-03
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.475e+11
Venus      3.475e+11
Earth      3.450e+11
Mars       3.475e+11
Jupiter    3.501e+11
Saturn     3.371e+11
Uranus     3.424e+11
Neptune    3.478e+11
Pluto      3.518e+11