Obs. : 2009-06-04
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.621e+11
Venus      3.526e+11
Earth      3.556e+11
Mars       3.576e+11
Jupiter    3.466e+11
Saturn     3.792e+11
Uranus     3.447e+11
Neptune    3.466e+11
Pluto      3.556e+11