Obs. : 2026-09-08
Planet	Ly alpha (photons/cm^2/sec)
Mercury    7.417e+08
Venus      7.602e+08
Earth      7.620e+08
Mars       7.228e+08
Jupiter    7.233e+08
Saturn     7.465e+08
Uranus     7.281e+08
Neptune    7.465e+08
Pluto      7.738e+08