Obs. : 2013-12-04
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.962e+11
Venus      3.623e+11
Earth      3.878e+11
Mars       4.249e+11
Jupiter    3.899e+11
Saturn     4.083e+11
Uranus     3.799e+11
Neptune    3.698e+11
Pluto      3.758e+11