Obs. : 2009-04-24
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.572e+11
Venus      3.479e+11
Earth      3.458e+11
Mars       3.479e+11
Jupiter    3.380e+11
Saturn     3.521e+11
Uranus     3.479e+11
Neptune    3.380e+11
Pluto      3.379e+11