Obs. : 2013-09-29
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.913e+11
Venus      3.925e+11
Earth      3.860e+11
Mars       4.000e+11
Jupiter    4.051e+11
Saturn     3.925e+11
Uranus     3.860e+11
Neptune    3.639e+11
Pluto      3.773e+11