Obs. : 2020-11-15
Planet	Ly alpha (photons/cm^2/sec)
Mercury    6.864e+08
Venus      6.824e+08
Earth      6.521e+08
Mars       6.560e+08
Jupiter    6.932e+08
Saturn     6.852e+08
Uranus     6.521e+08
Neptune    6.639e+08
Pluto      6.932e+08