Obs. : 2024-04-09
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.527e+08
Venus      8.260e+08
Earth      8.357e+08
Mars       7.686e+08
Jupiter    8.604e+08
Saturn     7.686e+08
Uranus     8.591e+08
Neptune    7.972e+08
Pluto      7.587e+08