Obs. : 2023-05-21
Planet	Ly alpha (photons/cm^2/sec)
Mercury    9.296e+08
Venus      8.685e+08
Earth      8.748e+08
Mars       8.651e+08
Jupiter    9.296e+08
Saturn     8.898e+08
Uranus     9.164e+08
Neptune    9.215e+08
Pluto      8.647e+08