disk-shaped articles
Which galaxy is disk-shaped?
What is the shape of the planetary nebula?
How do nebulae get their shape?
What is the actual shape of our universe?
Is the solar system in the disk of the Milky Way?
Are elliptical galaxies disc-shaped?
Why do planetary nebulas have so many different shapes?
What makes galaxies different shapes?
Do elliptical galaxies have a definite shape?
