Obs. : 2025-03-21
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.682e+08
Venus      8.682e+08
Earth      8.824e+08
Mars       8.846e+08
Jupiter    8.902e+08
Saturn     8.724e+08
Uranus     8.879e+08
Neptune    8.724e+08
Pluto      9.458e+08