Obs. : 2025-04-06
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.913e+08
Venus      8.913e+08
Earth      8.492e+08
Mars       8.632e+08
Jupiter    8.578e+08
Saturn     8.913e+08
Uranus     8.580e+08
Neptune    8.913e+08
Pluto      8.991e+08