Obs. : 2011-05-22
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.400e+11
Venus      4.400e+11
Earth      4.075e+11
Mars       4.400e+11
Jupiter    4.362e+11
Saturn     4.381e+11
Uranus     4.276e+11
Neptune    3.946e+11
Pluto      4.017e+11