Obs. : 2025-05-25
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.094e+08
Venus      8.156e+08
Earth      8.217e+08
Mars       8.071e+08
Jupiter    8.051e+08
Saturn     8.184e+08
Uranus     8.094e+08
Neptune    8.184e+08
Pluto      8.228e+08