Obs. : 2025-12-31
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.308e+08
Venus      8.308e+08
Earth      8.977e+08
Mars       8.307e+08
Jupiter    9.071e+08
Saturn     8.905e+08
Uranus     9.362e+08
Neptune    8.905e+08
Pluto      8.390e+08