It's not known to any degree of accuracy, but about 66% of all spiral galaxies are barred and about 60% of galaxies in the local Universe are spiral galaxies.
Barred galaxies per se do not exist. They are just a sub category of spiral galaxies of which about 2/3rds are barred spiral galaxies.
Spiral galaxies, barred spiral galaxies, elliptical galaxies, and irregular galaxies
Barred galaxies per se do not exist. They are just a sub category of spiral galaxies of which about 2/3rds are barred spiral galaxies. A barred spiral galaxy has a central bar shaped structure composed of stars whereas a non barred spiral galaxy does not. See related link for a pictorial of the difference.
Yes. There are two types of spiral galaxies: "S" (normal spiral) and the less common "SB" (barred spiral, with an elongated center).
spiral, eliptical, cartwheel, barred spiral, and lenticular galaxies
The bar.
They are in space. (: you're welcome.
They are called Spiral Galaxies or Barred Galaxies.
The milky way is the barred spiral galaxies.
spiral, barred spiral, elliptical, irregular, and peculiar
Spiral, barred spiral, lenticular, elliptical, irregular, and peculiar.
the types of galaxies are barred, irreagular, spiral, and a shape like an hourglass.