Obs. : 2008-12-18
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.608e+11
Venus      3.593e+11
Earth      3.496e+11
Mars       3.536e+11
Jupiter    3.622e+11
Saturn     3.438e+11
Uranus     3.506e+11
Neptune    3.593e+11
Pluto      3.608e+11