Obs. : 2009-01-16
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.548e+11
Venus      3.536e+11
Earth      3.506e+11
Mars       3.494e+11
Jupiter    3.548e+11
Saturn     3.456e+11
Uranus     3.536e+11
Neptune    3.565e+11
Pluto      3.459e+11