Obs. : 2025-05-21
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.009e+08
Venus      7.937e+08
Earth      8.357e+08
Mars       7.966e+08
Jupiter    8.092e+08
Saturn     7.918e+08
Uranus     8.009e+08
Neptune    7.937e+08
Pluto      8.023e+08