Obs. : 2025-11-22
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.371e+08
Venus      8.371e+08
Earth      7.940e+08
Mars       8.309e+08
Jupiter    7.955e+08
Saturn     7.662e+08
Uranus     7.940e+08
Neptune    7.662e+08
Pluto      7.791e+08