Obs. : 2009-10-04
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.505e+11
Venus      3.505e+11
Earth      3.488e+11
Mars       3.544e+11
Jupiter    3.486e+11
Saturn     3.505e+11
Uranus     3.488e+11
Neptune    3.486e+11
Pluto      3.541e+11