Obs. : 2025-12-15
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.288e+08
Venus      8.322e+08
Earth      7.329e+08
Mars       8.246e+08
Jupiter    7.329e+08
Saturn     7.868e+08
Uranus     7.456e+08
Neptune    7.868e+08
Pluto      8.191e+08