Obs. : 2026-05-13
Planet	Ly alpha (photons/cm^2/sec)
Mercury    7.810e+08
Venus      7.667e+08
Earth      6.929e+08
Mars       7.758e+08
Jupiter    7.590e+08
Saturn     7.639e+08
Uranus     7.762e+08
Neptune    7.489e+08
Pluto      7.089e+08