Obs. : 2025-03-24
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.839e+08
Venus      8.839e+08
Earth      8.704e+08
Mars       8.769e+08
Jupiter    8.600e+08
Saturn     8.839e+08
Uranus     8.555e+08
Neptune    8.839e+08
Pluto      9.503e+08