Obs. : 2009-10-24
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.447e+11
Venus      3.447e+11
Earth      3.654e+11
Mars       3.582e+11
Jupiter    3.668e+11
Saturn     3.471e+11
Uranus     3.657e+11
Neptune    3.668e+11
Pluto      3.641e+11