Obs. : 2025-12-04
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.149e+08
Venus      8.463e+08
Earth      8.768e+08
Mars       8.533e+08
Jupiter    8.612e+08
Saturn     8.545e+08
Uranus     8.822e+08
Neptune    8.650e+08
Pluto      8.449e+08