Obs. : 2026-04-05
Planet	Ly alpha (photons/cm^2/sec)
Mercury    7.642e+08
Venus      7.276e+08
Earth      7.492e+08
Mars       7.642e+08
Jupiter    7.268e+08
Saturn     7.541e+08
Uranus     7.260e+08
Neptune    7.541e+08
Pluto      8.163e+08