Obs. : 2025-09-22
Planet	Ly alpha (photons/cm^2/sec)
Mercury    7.943e+08
Venus      8.003e+08
Earth      9.234e+08
Mars       8.177e+08
Jupiter    8.370e+08
Saturn     9.188e+08
Uranus     8.726e+08
Neptune    9.129e+08
Pluto      9.062e+08