Obs. : 2026-09-07
Planet	Ly alpha (photons/cm^2/sec)
Mercury    7.508e+08
Venus      7.705e+08
Earth      7.538e+08
Mars       7.298e+08
Jupiter    7.288e+08
Saturn     7.364e+08
Uranus     7.384e+08
Neptune    7.364e+08
Pluto      7.763e+08