Obs. : 2025-06-15
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.096e+08
Venus      7.933e+08
Earth      8.126e+08
Mars       8.111e+08
Jupiter    8.107e+08
Saturn     8.019e+08
Uranus     7.999e+08
Neptune    8.019e+08
Pluto      8.096e+08