Obs. : 2025-08-03
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.534e+08
Venus      8.264e+08
Earth      8.168e+08
Mars       8.888e+08
Jupiter    8.389e+08
Saturn     8.224e+08
Uranus     8.237e+08
Neptune    8.224e+08
Pluto      8.514e+08