Obs. : 2010-04-01
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.830e+11
Venus      3.830e+11
Earth      3.634e+11
Mars       3.724e+11
Jupiter    3.732e+11
Saturn     3.598e+11
Uranus     3.732e+11
Neptune    3.679e+11
Pluto      3.587e+11