Obs. : 2023-11-21
Planet	Ly alpha (photons/cm^2/sec)
Mercury    9.145e+08
Venus      8.364e+08
Earth      9.380e+08
Mars       8.724e+08
Jupiter    9.380e+08
Saturn     9.825e+08
Uranus     9.317e+08
Neptune    9.791e+08
Pluto      9.580e+08