Obs. : 2026-01-28
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.192e+08
Venus      8.192e+08
Earth      8.237e+08
Mars       8.163e+08
Jupiter    8.611e+08
Saturn     8.629e+08
Uranus     8.881e+08
Neptune    8.629e+08
Pluto      8.163e+08