Obs. : 2026-01-01
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.391e+08
Venus      8.391e+08
Earth      8.942e+08
Mars       8.400e+08
Jupiter    8.999e+08
Saturn     8.819e+08
Uranus     9.479e+08
Neptune    8.965e+08
Pluto      8.503e+08