logo

Video encyclopedia

Hubble sequence

3:14

What is the Hubble Sequence?

0:59

Hubble Tuning Fork (a.k.a., Hubble Sequence)

1:33

Press Play University: Hubble Sequence Part 1

1:14

How Hubble Changed Astronomy

0:16

Chris Ramsey’s “Hubble” sequence.

The Hubble sequence is a morphological classification scheme for galaxies invented by Edwin Hubble in 1926. It is often known colloquially as the Hubble tuning fork diagram because of the shape in which it is traditionally represented.
    • Classes of galaxies 

    • Physical significance 

    • Shortcomings