Obs. : 2012-07-18
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.462e+11
Venus      4.660e+11
Earth      3.958e+11
Mars       4.400e+11
Jupiter    4.657e+11
Saturn     4.286e+11
Uranus     4.364e+11
Neptune    4.154e+11
Pluto      3.940e+11