Obs. : 2023-04-24
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.899e+08
Venus      8.832e+08
Earth      8.499e+08
Mars       8.685e+08
Jupiter    9.082e+08
Saturn     8.950e+08
Uranus     8.899e+08
Neptune    9.253e+08
Pluto      8.644e+08