Obs. : 2026-08-18
Planet	Ly alpha (photons/cm^2/sec)
Mercury    6.719e+08
Venus      6.899e+08
Earth      7.628e+08
Mars       7.321e+08
Jupiter    6.663e+08
Saturn     7.590e+08
Uranus     7.557e+08
Neptune    7.747e+08
Pluto      7.470e+08