Obs. : 2026-04-08
Planet	Ly alpha (photons/cm^2/sec)
Mercury    7.775e+08
Venus      7.196e+08
Earth      7.028e+08
Mars       7.775e+08
Jupiter    6.996e+08
Saturn     7.607e+08
Uranus     7.145e+08
Neptune    7.775e+08
Pluto      7.770e+08