Obs. : 2026-09-15
Planet	Ly alpha (photons/cm^2/sec)
Mercury    6.942e+08
Venus      7.089e+08
Earth      7.690e+08
Mars       7.486e+08
Jupiter    7.302e+08
Saturn     7.670e+08
Uranus     7.621e+08
Neptune    7.689e+08
Pluto      7.653e+08