Obs. : 2009-10-15
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.464e+11
Venus      3.448e+11
Earth      3.556e+11
Mars       3.511e+11
Jupiter    3.620e+11
Saturn     3.448e+11
Uranus     3.556e+11
Neptune    3.577e+11
Pluto      3.692e+11