Obs. : 2025-12-13
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.076e+08
Venus      8.069e+08
Earth      7.328e+08
Mars       8.057e+08
Jupiter    7.343e+08
Saturn     8.133e+08
Uranus     7.529e+08
Neptune    8.133e+08
Pluto      8.093e+08