Obs. : 2023-01-07
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.874e+08
Venus      8.731e+08
Earth      9.190e+08
Mars       9.386e+08
Jupiter    8.859e+08
Saturn     8.764e+08
Uranus     9.270e+08
Neptune    8.859e+08
Pluto      8.752e+08