Obs. : 2025-10-16
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.387e+08
Venus      7.739e+08
Earth      8.386e+08
Mars       8.387e+08
Jupiter    8.069e+08
Saturn     8.386e+08
Uranus     8.224e+08
Neptune    8.386e+08
Pluto      8.764e+08