Obs. : 2023-10-28
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.862e+08
Venus      8.261e+08
Earth      9.077e+08
Mars       8.862e+08
Jupiter    9.017e+08
Saturn     9.221e+08
Uranus     8.936e+08
Neptune    9.132e+08
Pluto      9.223e+08