Obs. : 2020-11-23
Planet	Ly alpha (photons/cm^2/sec)
Mercury    6.699e+08
Venus      6.579e+08
Earth      6.858e+08
Mars       7.038e+08
Jupiter    7.363e+08
Saturn     7.363e+08
Uranus     6.858e+08
Neptune    7.082e+08
Pluto      7.363e+08