Obs. : 2026-09-13
Planet	Ly alpha (photons/cm^2/sec)
Mercury    6.665e+08
Venus      6.973e+08
Earth      7.465e+08
Mars       7.202e+08
Jupiter    7.064e+08
Saturn     7.387e+08
Uranus     7.293e+08
Neptune    7.414e+08
Pluto      7.478e+08