Obs. : 2018-12-08
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.505e+11
Venus      3.489e+11
Earth      3.523e+11
Mars       3.570e+11
Jupiter    3.526e+11
Saturn     3.587e+11
Uranus     3.505e+11
Neptune    3.570e+11
Pluto      3.602e+11