Obs. : 2025-06-05
Planet	Ly alpha (photons/cm^2/sec)
Mercury    7.799e+08
Venus      7.581e+08
Earth      7.876e+08
Mars       7.680e+08
Jupiter    7.799e+08
Saturn     7.601e+08
Uranus     7.620e+08
Neptune    7.574e+08
Pluto      7.846e+08