Obs. : 2025-06-19
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.273e+08
Venus      8.021e+08
Earth      8.000e+08
Mars       8.272e+08
Jupiter    8.260e+08
Saturn     8.007e+08
Uranus     8.133e+08
Neptune    8.007e+08
Pluto      8.020e+08