Obs. : 2008-10-25
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.463e+11
Venus      3.616e+11
Earth      3.467e+11
Mars       3.554e+11
Jupiter    3.608e+11
Saturn     3.479e+11
Uranus     3.459e+11
Neptune    3.518e+11
Pluto      3.622e+11