A particular focus of much head scratching is the bar that appears in many spiral galaxies. How does this form and why only in some spiral galaxies? One thing that astronomers have studied in ...

The Milky Way, also a spiral galaxy, sports a similar bar. Scientists suspect the Milky ... time travels billions of years in amazing 3D visualization (video) The JWST can collect six times ...

Small spiral galaxies with bars at their centres are three times more common today than they were 7 billion years ago, a new study reveals. The research bolsters the idea that bars signal a ...

About two thirds of spiral galaxies observed in the universe today possess a bar structure. The bar is thought to serve as a form of stellar nursery, bringing gas inward from the galaxy's spiral arms.

Central bars occur in about two-thirds of spiral galaxies. We think they are regions of many overlapping stellar orbits. Bars are also density waves that rotate around the disk with a speed ...