Obs. : 2023-12-30
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.551e+08
Venus      8.537e+08
Earth      8.250e+08
Mars       8.590e+08
Jupiter    8.763e+08
Saturn     9.190e+08
Uranus     8.488e+08
Neptune    9.134e+08
Pluto      9.003e+08