Obs. : 2025-12-17
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.474e+08
Venus      8.391e+08
Earth      7.430e+08
Mars       8.346e+08
Jupiter    7.430e+08
Saturn     7.662e+08
Uranus     7.515e+08
Neptune    7.516e+08
Pluto      8.142e+08