Obs. : 2009-06-13
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.600e+11
Venus      3.520e+11
Earth      3.540e+11
Mars       3.581e+11
Jupiter    3.493e+11
Saturn     3.706e+11
Uranus     3.511e+11
Neptune    3.493e+11
Pluto      3.567e+11