Each of these galaxies have different red
shifts which means that they are probably not very close and
just lie along the same line of sight. Spiral galaxy NGC 1160
has several short patchy arms. Lenticular Galaxy NGC 1161 has a
bright nucleus with a spectrum showing hydrogen emission lines.
Most astronomers believe that this sort of Active Galactic
Nucleus is caused by gas or stars spiraling into a massive black
hole with a mass of many millions of suns.
