Obs. : 2013-07-18
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.915e+11
Venus      3.742e+11
Earth      4.165e+11
Mars       3.963e+11
Jupiter    3.963e+11
Saturn     4.105e+11
Uranus     3.968e+11
Neptune    4.039e+11
Pluto      4.165e+11