Obs. : 2025-02-20
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.623e+08
Venus      8.685e+08
Earth      9.108e+08
Mars       9.585e+08
Jupiter    9.551e+08
Saturn     8.478e+08
Uranus     9.368e+08
Neptune    8.478e+08
Pluto      8.844e+08