Obs. : 2025-03-17
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.953e+08
Venus      8.953e+08
Earth      9.745e+08
Mars       8.815e+08
Jupiter    8.897e+08
Saturn     8.770e+08
Uranus     8.958e+08
Neptune    8.953e+08
Pluto      8.609e+08