Obs. : 2025-04-02
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.970e+08
Venus      8.970e+08
Earth      8.700e+08
Mars       8.806e+08
Jupiter    8.974e+08
Saturn     8.970e+08
Uranus     9.156e+08
Neptune    8.999e+08
Pluto      9.008e+08