Obs. : 2009-12-21
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.548e+11
Venus      3.515e+11
Earth      3.642e+11
Mars       3.667e+11
Jupiter    3.515e+11
Saturn     3.577e+11
Uranus     3.492e+11
Neptune    3.515e+11
Pluto      3.559e+11