Obs. : 2026-01-25
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.298e+08
Venus      8.298e+08
Earth      8.778e+08
Mars       8.314e+08
Jupiter    9.205e+08
Saturn     8.591e+08
Uranus     9.143e+08
Neptune    8.591e+08
Pluto      8.314e+08