Obs. : 2025-10-09
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.484e+08
Venus      8.314e+08
Earth      7.536e+08
Mars       8.484e+08
Jupiter    8.002e+08
Saturn     7.536e+08
Uranus     7.728e+08
Neptune    7.536e+08
Pluto      8.067e+08