Obs. : 2009-10-21
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.363e+11
Venus      3.376e+11
Earth      3.571e+11
Mars       3.500e+11
Jupiter    3.600e+11
Saturn     3.376e+11
Uranus     3.562e+11
Neptune    3.600e+11
Pluto      3.605e+11