Obs. : 2025-05-09
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.192e+08
Venus      8.155e+08
Earth      8.017e+08
Mars       8.033e+08
Jupiter    8.238e+08
Saturn     8.120e+08
Uranus     8.373e+08
Neptune    8.120e+08
Pluto      8.062e+08