Obs. : 2026-06-25
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.014e+08
Venus      8.084e+08
Earth      8.538e+08
Mars       7.606e+08
Jupiter    8.014e+08
Saturn     8.047e+08
Uranus     7.606e+08
Neptune    8.235e+08
Pluto      8.486e+08