Obs. : 2009-01-04
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.600e+11
Venus      3.578e+11
Earth      3.531e+11
Mars       3.552e+11
Jupiter    3.600e+11
Saturn     3.465e+11
Uranus     3.540e+11
Neptune    3.594e+11
Pluto      3.552e+11