Obs. : 2025-08-14
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.548e+08
Venus      8.478e+08
Earth      8.201e+08
Mars       8.421e+08
Jupiter    8.478e+08
Saturn     8.175e+08
Uranus     8.313e+08
Neptune    8.175e+08
Pluto      8.106e+08