Obs. : 2025-09-14
Planet	Ly alpha (photons/cm^2/sec)
Mercury    7.661e+08
Venus      7.412e+08
Earth      7.542e+08
Mars       7.980e+08
Jupiter    7.393e+08
Saturn     7.474e+08
Uranus     7.437e+08
Neptune    7.474e+08
Pluto      7.895e+08