Obs. : 2009-10-05
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.454e+11
Venus      3.454e+11
Earth      3.451e+11
Mars       3.489e+11
Jupiter    3.466e+11
Saturn     3.454e+11
Uranus     3.451e+11
Neptune    3.466e+11
Pluto      3.549e+11