Obs. : 2025-04-10
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.826e+08
Venus      8.826e+08
Earth      8.661e+08
Mars       8.472e+08
Jupiter    8.498e+08
Saturn     8.826e+08
Uranus     8.552e+08
Neptune    8.826e+08
Pluto      8.462e+08