Obs. : 2009-11-13
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.707e+11
Venus      3.360e+11
Earth      3.540e+11
Mars       3.579e+11
Jupiter    3.654e+11
Saturn     3.547e+11
Uranus     3.620e+11
Neptune    3.637e+11
Pluto      3.732e+11