Obs. : 2010-09-20
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.644e+11
Venus      3.864e+11
Earth      3.874e+11
Mars       3.864e+11
Jupiter    3.857e+11
Saturn     3.714e+11
Uranus     3.857e+11
Neptune    3.862e+11
Pluto      3.906e+11