Obs. : 2011-02-21
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.937e+11
Venus      3.863e+11
Earth      3.670e+11
Mars       3.937e+11
Jupiter    3.876e+11
Saturn     3.744e+11
Uranus     3.942e+11
Neptune    3.937e+11
Pluto      3.854e+11