Obs. : 2025-11-14
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.127e+08
Venus      8.000e+08
Earth      8.210e+08
Mars       8.127e+08
Jupiter    8.693e+08
Saturn     8.010e+08
Uranus     8.443e+08
Neptune    8.010e+08
Pluto      8.293e+08