Obs. : 2009-04-25
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.611e+11
Venus      3.529e+11
Earth      3.474e+11
Mars       3.529e+11
Jupiter    3.428e+11
Saturn     3.540e+11
Uranus     3.529e+11
Neptune    3.428e+11
Pluto      3.410e+11