Obs. : 2025-10-07
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.628e+08
Venus      8.619e+08
Earth      7.742e+08
Mars       8.628e+08
Jupiter    8.343e+08
Saturn     7.742e+08
Uranus     7.978e+08
Neptune    7.742e+08
Pluto      7.741e+08