Obs. : 2020-04-30
Planet	Ly alpha (photons/cm^2/sec)
Mercury    6.578e+08
Venus      6.439e+08
Earth      6.306e+08
Mars       6.227e+08
Jupiter    6.223e+08
Saturn     6.223e+08
Uranus     6.578e+08
Neptune    6.400e+08
Pluto      6.216e+08