Obs. : 2009-09-07
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.433e+11
Venus      3.333e+11
Earth      3.460e+11
Mars       3.422e+11
Jupiter    3.460e+11
Saturn     3.360e+11
Uranus     3.419e+11
Neptune    3.460e+11
Pluto      3.527e+11