Obs. : 2011-04-05
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.867e+11
Venus      4.033e+11
Earth      4.290e+11
Mars       3.900e+11
Jupiter    3.867e+11
Saturn     4.290e+11
Uranus     3.900e+11
Neptune    4.167e+11
Pluto      4.304e+11