Obs. : 2020-11-04
Planet	Ly alpha (photons/cm^2/sec)
Mercury    6.589e+08
Venus      6.544e+08
Earth      6.663e+08
Mars       6.676e+08
Jupiter    6.626e+08
Saturn     6.626e+08
Uranus     6.663e+08
Neptune    6.675e+08
Pluto      6.626e+08