Obs. : 2026-06-30
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.488e+08
Venus      8.587e+08
Earth      8.550e+08
Mars       7.756e+08
Jupiter    8.488e+08
Saturn     7.784e+08
Uranus     7.756e+08
Neptune    7.905e+08
Pluto      8.550e+08