Obs. : 2009-12-14
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.623e+11
Venus      3.500e+11
Earth      3.640e+11
Mars       3.575e+11
Jupiter    3.639e+11
Saturn     3.439e+11
Uranus     3.639e+11
Neptune    3.640e+11
Pluto      3.581e+11