Obs. : 2025-05-04
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.477e+08
Venus      8.518e+08
Earth      8.134e+08
Mars       7.933e+08
Jupiter    8.016e+08
Saturn     8.491e+08
Uranus     8.148e+08
Neptune    8.518e+08
Pluto      8.152e+08