- Common Name: Spiral galaxy
- Hubble Sequence Class: Spiral
- Denotes: Sa, Sb, Sc, SBa, SBb or SBc
- Appearance Characteristics: Spiral Shaped, Like a Whirlpool
- Example Galaxies: Milky Way and Andromeda
15 Spiral Galaxy Facts for Kids
- A spiral galaxy is a type of galaxy on the Hubble sequence classification scheme.
- There are six main types of spiral galaxies, and they are Sa, Sb, Sc, SBa, SBb and SBc.
- A spiral galaxy has a spiral like structure and will have well-defined arms extending outwards.
- All spiral galaxies have a supermassive black hole in the very center of their bulge.
- A spiral galaxy is called a grand design spiral galaxy when it has prominent, well-defined arms.
- A spiral galaxy is called a barred spiral galaxy when it has a centralized bar-shaped structured that contains stars.
- It’s estimated that spiral galaxies and irregular galaxies make up to 60% of the galaxies in the observable universe.
- Our galaxy, the Milky Way, is a barred spiral galaxy and the home of our Solar System.
- The oldest spiral galaxy in the known universe is BX422, with an estimated age of 11 billion years old.
- An example of a Sa spiral galaxy is the Andromeda Galaxy, also known as NGC 224.
- An example of a Sb spiral galaxy is PGC 69533, also known as UGC 12158.
- An example of a Sc spiral galaxy is BX442.
- An example of a SBa spiral galaxy is NGC 4314.
- An example of a SBb spiral galaxy is Messier 95, also known as NGC 3351.
- An example of a SBc spiral galaxy is NGC 3953.
Spiral Galaxy Pictures
A photo of spiral galaxy NGC 6503.
A photo of spiral galaxy NGC 5236.
A photo of spiral galaxy NGC 3982.
Additional Resources with Spiral Galaxy Facts
- Galaxy Types and Classifications – Learn about the different types of galaxies, like the spiral galaxy on the Cornell website.
- Pictures of Spiral Galaxies – View some awesome pictures of spiral galaxies taken by the Hubble Space Telescope.
- Spiral Galaxy – Wikipedia – Discover more amazing facts about spiral galaxies on the Wikipedia website.