Obs. : 2011-04-17
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.602e+11
Venus      4.511e+11
Earth      3.990e+11
Mars       4.602e+11
Jupiter    4.635e+11
Saturn     4.046e+11
Uranus     4.602e+11
Neptune    4.384e+11
Pluto      3.996e+11