Obs. : 2025-11-17
Planet	Ly alpha (photons/cm^2/sec)
Mercury    7.785e+08
Venus      7.985e+08
Earth      7.822e+08
Mars       7.785e+08
Jupiter    8.079e+08
Saturn     7.826e+08
Uranus     7.899e+08
Neptune    7.720e+08
Pluto      7.888e+08