Obs. : 2025-09-13
Planet	Ly alpha (photons/cm^2/sec)
Mercury    7.613e+08
Venus      7.406e+08
Earth      7.427e+08
Mars       7.886e+08
Jupiter    7.260e+08
Saturn     7.369e+08
Uranus     7.288e+08
Neptune    7.369e+08
Pluto      7.694e+08