Obs. : 2025-02-08
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.314e+08
Venus      8.350e+08
Earth      8.074e+08
Mars       8.410e+08
Jupiter    8.651e+08
Saturn     8.262e+08
Uranus     8.672e+08
Neptune    8.350e+08
Pluto      8.600e+08