Obs. : 2025-05-08
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.360e+08
Venus      8.279e+08
Earth      8.137e+08
Mars       8.044e+08
Jupiter    8.275e+08
Saturn     8.235e+08
Uranus     8.417e+08
Neptune    8.235e+08
Pluto      7.984e+08