Obs. : 2009-09-27
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.302e+11
Venus      3.336e+11
Earth      3.530e+11
Mars       3.501e+11
Jupiter    3.537e+11
Saturn     3.302e+11
Uranus     3.521e+11
Neptune    3.524e+11
Pluto      3.580e+11