Obs. : 2013-08-04
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.674e+11
Venus      3.799e+11
Earth      3.743e+11
Mars       3.674e+11
Jupiter    3.659e+11
Saturn     3.774e+11
Uranus     3.598e+11
Neptune    3.655e+11
Pluto      3.762e+11