Obs. : 2026-06-07
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.456e+08
Venus      8.602e+08
Earth      7.806e+08
Mars       8.301e+08
Jupiter    8.602e+08
Saturn     8.165e+08
Uranus     8.362e+08
Neptune    8.165e+08
Pluto      7.860e+08