Obs. : 2010-04-17
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.886e+11
Venus      3.886e+11
Earth      3.670e+11
Mars       3.837e+11
Jupiter    3.703e+11
Saturn     3.716e+11
Uranus     3.831e+11
Neptune    3.708e+11
Pluto      3.589e+11