Obs. : 2009-05-21
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.568e+11
Venus      3.569e+11
Earth      3.532e+11
Mars       3.571e+11
Jupiter    3.527e+11
Saturn     3.565e+11
Uranus     3.549e+11
Neptune    3.527e+11
Pluto      3.532e+11