Obs. : 2025-11-09
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.505e+08
Venus      8.354e+08
Earth      8.879e+08
Mars       8.505e+08
Jupiter    8.839e+08
Saturn     8.774e+08
Uranus     8.995e+08
Neptune    8.774e+08
Pluto      8.559e+08