Obs. : 2025-11-19
Planet	Ly alpha (photons/cm^2/sec)
Mercury    7.870e+08
Venus      8.104e+08
Earth      7.809e+08
Mars       7.870e+08
Jupiter    7.899e+08
Saturn     7.765e+08
Uranus     7.862e+08
Neptune    7.732e+08
Pluto      7.756e+08