Obs. : 2009-09-14
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.509e+11
Venus      3.447e+11
Earth      3.480e+11
Mars       3.458e+11
Jupiter    3.509e+11
Saturn     3.509e+11
Uranus     3.448e+11
Neptune    3.480e+11
Pluto      3.601e+11