Obs. : 2026-07-12
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.222e+08
Venus      7.689e+08
Earth      7.209e+08
Mars       8.389e+08
Jupiter    7.960e+08
Saturn     7.760e+08
Uranus     8.339e+08
Neptune    7.679e+08
Pluto      7.036e+08