Obs. : 2025-10-14
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.331e+08
Venus      7.861e+08
Earth      8.065e+08
Mars       8.331e+08
Jupiter    7.847e+08
Saturn     8.065e+08
Uranus     7.984e+08
Neptune    8.065e+08
Pluto      8.463e+08