Obs. : 2013-12-08
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.910e+11
Venus      3.961e+11
Earth      4.096e+11
Mars       4.319e+11
Jupiter    4.190e+11
Saturn     3.962e+11
Uranus     4.016e+11
Neptune    4.028e+11
Pluto      3.933e+11