Obs. : 2025-12-11
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.301e+08
Venus      8.332e+08
Earth      7.617e+08
Mars       8.319e+08
Jupiter    7.461e+08
Saturn     8.658e+08
Uranus     8.090e+08
Neptune    8.658e+08
Pluto      8.389e+08