Obs. : 2023-11-18
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.942e+08
Venus      8.233e+08
Earth      8.092e+08
Mars       8.310e+08
Jupiter    8.092e+08
Saturn     8.977e+08
Uranus     8.027e+08
Neptune    8.713e+08
Pluto      9.208e+08