Obs. : 2026-05-29
Planet	Ly alpha (photons/cm^2/sec)
Mercury    7.280e+08
Venus      7.295e+08
Earth      8.086e+08
Mars       6.868e+08
Jupiter    7.295e+08
Saturn     6.965e+08
Uranus     7.087e+08
Neptune    7.023e+08
Pluto      7.663e+08