Obs. : 2017-12-08
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.803e+11
Venus      3.677e+11
Earth      3.562e+11
Mars       3.431e+11
Jupiter    3.460e+11
Saturn     3.803e+11
Uranus     3.596e+11
Neptune    3.745e+11
Pluto      3.896e+11