Obs. : 2025-04-07
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.872e+08
Venus      8.872e+08
Earth      8.458e+08
Mars       8.537e+08
Jupiter    8.486e+08
Saturn     8.872e+08
Uranus     8.489e+08
Neptune    8.872e+08
Pluto      8.772e+08