Obs. : 2026-07-09
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.449e+08
Venus      8.406e+08
Earth      7.177e+08
Mars       8.234e+08
Jupiter    8.449e+08
Saturn     7.713e+08
Uranus     8.234e+08
Neptune    7.713e+08
Pluto      7.177e+08