Obs. : 2025-12-27
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.180e+08
Venus      8.180e+08
Earth      9.122e+08
Mars       8.056e+08
Jupiter    9.122e+08
Saturn     8.125e+08
Uranus     8.956e+08
Neptune    8.125e+08
Pluto      8.036e+08