This is a test. How S0 galaxies form is unique. This is the display
When viewed edge-on, S0 galaxies (alternatively called lenticular galaxies) have a shape reminiscent of a lens (hence the alternative name). Located at the fork in the Hubble classification diagram and labelled S0 or SB0 (if there is a hint of a bar), they have a structure that appears intermediate between elliptical galaxies and spiral galaxies.