Obs. : 2025-09-24
Planet	Ly alpha (photons/cm^2/sec)
Mercury    7.909e+08
Venus      8.055e+08
Earth      8.984e+08
Mars       7.964e+08
Jupiter    8.570e+08
Saturn     9.014e+08
Uranus     8.934e+08
Neptune    9.014e+08
Pluto      8.579e+08