Obs. : 2026-06-20
Planet	Ly alpha (photons/cm^2/sec)
Mercury    7.535e+08
Venus      7.503e+08
Earth      8.036e+08
Mars       7.670e+08
Jupiter    7.535e+08
Saturn     8.076e+08
Uranus     7.614e+08
Neptune    8.076e+08
Pluto      8.125e+08