Obs. : 2012-02-28
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.192e+11
Venus      4.167e+11
Earth      4.490e+11
Mars       4.543e+11
Jupiter    4.145e+11
Saturn     4.482e+11
Uranus     4.192e+11
Neptune    4.254e+11
Pluto      4.270e+11