Obs. : 2025-10-06
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.711e+08
Venus      8.796e+08
Earth      7.928e+08
Mars       8.711e+08
Jupiter    8.596e+08
Saturn     7.928e+08
Uranus     8.273e+08
Neptune    7.973e+08
Pluto      7.875e+08