Obs. : 2020-01-31
Planet	Ly alpha (photons/cm^2/sec)
Mercury    6.095e+08
Venus      6.098e+08
Earth      6.233e+08
Mars       6.298e+08
Jupiter    6.312e+08
Saturn     6.312e+08
Uranus     5.999e+08
Neptune    6.098e+08
Pluto      6.312e+08