Obs. : 2025-02-24
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.984e+08
Venus      9.786e+08
Earth      9.080e+08
Mars       9.457e+08
Jupiter    9.786e+08
Saturn     8.984e+08
Uranus     9.922e+08
Neptune    9.377e+08
Pluto      8.519e+08