Obs. : 2026-05-09
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.056e+08
Venus      7.609e+08
Earth      7.304e+08
Mars       8.032e+08
Jupiter    7.315e+08
Saturn     8.023e+08
Uranus     7.806e+08
Neptune    7.889e+08
Pluto      7.392e+08