Obs. : 2023-04-29
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.944e+08
Venus      8.995e+08
Earth      8.751e+08
Mars       8.954e+08
Jupiter    8.837e+08
Saturn     8.556e+08
Uranus     8.944e+08
Neptune    8.766e+08
Pluto      8.471e+08