Obs. : 2023-04-04
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.778e+08
Venus      8.768e+08
Earth      9.196e+08
Mars       8.801e+08
Jupiter    8.854e+08
Saturn     8.893e+08
Uranus     8.768e+08
Neptune    8.962e+08
Pluto      8.762e+08