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Astronomy · L3 · The Hubble Classification of Galaxies

Sorting galaxies into spiral, barred spiral, elliptical, and irregular types by shape.

by @openstemUpdated Astronomy
Observed galaxy shapeSmooth and round, little gas or dust?Elliptical galaxyHas spiral arms?Barred spiral galaxySpiral galaxyIrregular galaxyYesNoYes, with a straight central barYes, no central barNo clear symmetric shape

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