Obs. : 2025-03-28
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.837e+08
Venus      8.837e+08
Earth      8.449e+08
Mars       8.191e+08
Jupiter    8.205e+08
Saturn     8.837e+08
Uranus     8.305e+08
Neptune    8.837e+08
Pluto      8.387e+08