Obs. : 2023-08-22
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.898e+08
Venus      8.600e+08
Earth      8.825e+08
Mars       8.898e+08
Jupiter    8.943e+08
Saturn     8.797e+08
Uranus     8.943e+08
Neptune    8.825e+08
Pluto      8.833e+08