Obs. : 2023-05-28
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.703e+08
Venus      9.013e+08
Earth      8.774e+08
Mars       9.013e+08
Jupiter    8.665e+08
Saturn     8.631e+08
Uranus     8.703e+08
Neptune    8.532e+08
Pluto      8.736e+08