Obs. : 2025-06-12
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.128e+08
Venus      8.054e+08
Earth      8.115e+08
Mars       8.122e+08
Jupiter    8.105e+08
Saturn     8.141e+08
Uranus     8.071e+08
Neptune    8.141e+08
Pluto      8.149e+08