Obs. : 2025-12-03
Planet	Ly alpha (photons/cm^2/sec)
Mercury    7.975e+08
Venus      8.304e+08
Earth      8.686e+08
Mars       8.567e+08
Jupiter    8.621e+08
Saturn     8.457e+08
Uranus     8.812e+08
Neptune    8.564e+08
Pluto      8.361e+08