Obs. : 2025-10-12
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.499e+08
Venus      8.197e+08
Earth      7.978e+08
Mars       8.499e+08
Jupiter    7.960e+08
Saturn     7.978e+08
Uranus     7.899e+08
Neptune    7.978e+08
Pluto      8.464e+08