Obs. : 2009-11-09
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.798e+11
Venus      3.566e+11
Earth      3.500e+11
Mars       3.503e+11
Jupiter    3.623e+11
Saturn     3.474e+11
Uranus     3.537e+11
Neptune    3.623e+11
Pluto      3.755e+11