Obs. : 2025-11-24
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.241e+08
Venus      8.241e+08
Earth      7.922e+08
Mars       8.437e+08
Jupiter    8.047e+08
Saturn     7.790e+08
Uranus     7.922e+08
Neptune    7.790e+08
Pluto      8.122e+08