Obs. : 2025-08-09
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.579e+08
Venus      8.448e+08
Earth      8.167e+08
Mars       8.495e+08
Jupiter    8.448e+08
Saturn     8.174e+08
Uranus     8.385e+08
Neptune    8.174e+08
Pluto      8.007e+08