Obs. : 2010-06-21
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.805e+11
Venus      3.855e+11
Earth      3.797e+11
Mars       3.954e+11
Jupiter    3.659e+11
Saturn     3.963e+11
Uranus     3.658e+11
Neptune    3.726e+11
Pluto      3.813e+11