Obs. : 2009-03-19
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.584e+11
Venus      3.628e+11
Earth      3.474e+11
Mars       3.492e+11
Jupiter    3.400e+11
Saturn     3.415e+11
Uranus     3.584e+11
Neptune    3.400e+11
Pluto      3.295e+11