Obs. : 2025-11-18
Planet	Ly alpha (photons/cm^2/sec)
Mercury    7.808e+08
Venus      8.012e+08
Earth      7.788e+08
Mars       7.808e+08
Jupiter    7.995e+08
Saturn     7.751e+08
Uranus     7.864e+08
Neptune    7.702e+08
Pluto      7.779e+08