Obs. : 2025-11-13
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.349e+08
Venus      8.187e+08
Earth      8.535e+08
Mars       8.349e+08
Jupiter    8.906e+08
Saturn     8.264e+08
Uranus     8.709e+08
Neptune    8.264e+08
Pluto      8.502e+08