Obs. : 2025-07-01
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.144e+08
Venus      7.911e+08
Earth      8.268e+08
Mars       8.198e+08
Jupiter    8.078e+08
Saturn     8.181e+08
Uranus     7.911e+08
Neptune    8.181e+08
Pluto      8.268e+08