Obs. : 2026-04-16
Planet	Ly alpha (photons/cm^2/sec)
Mercury    7.152e+08
Venus      7.398e+08
Earth      6.954e+08
Mars       7.152e+08
Jupiter    7.190e+08
Saturn     7.152e+08
Uranus     7.309e+08
Neptune    7.152e+08
Pluto      6.829e+08