Obs. : 2009-07-22
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.520e+11
Venus      3.503e+11
Earth      3.496e+11
Mars       3.495e+11
Jupiter    3.462e+11
Saturn     3.749e+11
Uranus     3.406e+11
Neptune    3.462e+11
Pluto      3.603e+11