Obs. : 2025-04-16
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.388e+08
Venus      8.371e+08
Earth      8.409e+08
Mars       8.573e+08
Jupiter    8.664e+08
Saturn     8.371e+08
Uranus     8.643e+08
Neptune    8.388e+08
Pluto      8.378e+08