Obs. : 2023-12-09
Planet	Ly alpha (photons/cm^2/sec)
Mercury    9.260e+08
Venus      8.645e+08
Earth      7.964e+08
Mars       8.986e+08
Jupiter    7.594e+08
Saturn     8.537e+08
Uranus     7.817e+08
Neptune    8.036e+08
Pluto      9.099e+08