Obs. : 2023-12-25
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.940e+08
Venus      9.043e+08
Earth      9.351e+08
Mars       8.940e+08
Jupiter    9.894e+08
Saturn     9.135e+08
Uranus     9.834e+08
Neptune    9.563e+08
Pluto      9.108e+08