Obs. : 2025-04-05
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.925e+08
Venus      8.925e+08
Earth      8.555e+08
Mars       8.734e+08
Jupiter    8.752e+08
Saturn     8.925e+08
Uranus     8.789e+08
Neptune    8.925e+08
Pluto      9.099e+08