Obs. : 2023-04-18
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.856e+08
Venus      8.837e+08
Earth      8.952e+08
Mars       8.754e+08
Jupiter    9.062e+08
Saturn     9.194e+08
Uranus     8.856e+08
Neptune    9.209e+08
Pluto      9.005e+08