Obs. : 2023-11-20
Planet	Ly alpha (photons/cm^2/sec)
Mercury    9.026e+08
Venus      8.249e+08
Earth      8.851e+08
Mars       8.604e+08
Jupiter    8.851e+08
Saturn     9.619e+08
Uranus     8.754e+08
Neptune    9.483e+08
Pluto      9.518e+08