Obs. : 2023-04-25
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.903e+08
Venus      8.900e+08
Earth      8.523e+08
Mars       8.744e+08
Jupiter    9.069e+08
Saturn     8.848e+08
Uranus     8.903e+08
Neptune    9.161e+08
Pluto      8.601e+08