Obs. : 2026-02-01
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.536e+08
Venus      8.536e+08
Earth      8.176e+08
Mars       8.393e+08
Jupiter    8.277e+08
Saturn     8.682e+08
Uranus     8.613e+08
Neptune    8.682e+08
Pluto      8.393e+08