Obs. : 2025-10-24
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.136e+08
Venus      8.235e+08
Earth      8.409e+08
Mars       8.136e+08
Jupiter    8.309e+08
Saturn     8.365e+08
Uranus     8.371e+08
Neptune    8.365e+08
Pluto      8.149e+08