Obs. : 2025-02-23
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.642e+08
Venus      9.184e+08
Earth      9.024e+08
Mars       9.448e+08
Jupiter    9.607e+08
Saturn     8.642e+08
Uranus     9.602e+08
Neptune    8.892e+08
Pluto      8.531e+08