Obs. : 2025-09-27
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.276e+08
Venus      8.713e+08
Earth      9.067e+08
Mars       8.232e+08
Jupiter    9.266e+08
Saturn     9.094e+08
Uranus     9.358e+08
Neptune    9.094e+08
Pluto      8.834e+08