Obs. : 2023-04-05
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.859e+08
Venus      8.842e+08
Earth      9.260e+08
Mars       8.884e+08
Jupiter    8.944e+08
Saturn     8.991e+08
Uranus     8.842e+08
Neptune    9.035e+08
Pluto      8.869e+08