Obs. : 2026-02-07
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.152e+08
Venus      8.152e+08
Earth      7.904e+08
Mars       8.230e+08
Jupiter    7.987e+08
Saturn     8.089e+08
Uranus     8.063e+08
Neptune    8.089e+08
Pluto      8.306e+08