Obs. : 2009-01-23
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.499e+11
Venus      3.455e+11
Earth      3.474e+11
Mars       3.499e+11
Jupiter    3.504e+11
Saturn     3.424e+11
Uranus     3.455e+11
Neptune    3.502e+11
Pluto      3.408e+11