Obs. : 2025-12-26
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.142e+08
Venus      8.142e+08
Earth      8.929e+08
Mars       7.981e+08
Jupiter    8.929e+08
Saturn     7.830e+08
Uranus     8.671e+08
Neptune    7.830e+08
Pluto      7.881e+08