Scientists classify everything from the smallest cells to the largest galaxies, but how do they decide on a classification system? Scholars use 40 pictures of galaxies taken by the Hubble Space Telescope to sort and try creating their...

Tenth graders explore the structure and content of galaxies. Through discussion, lab, and hands-on activities, they discover the general structure of the three types of galaxies as well as the effect they have on the structure and...

Students examine Hubble Deep Field images. In this galaxy classification lesson, students research galaxy classification. Students view and classify Hubble Deep field images of galaxies.

Add a little color to the universe. Learners recreate images of the galaxies using real data and Photoshop software. They display their images in a Hubble tuning fork diagram by classifying and categorizing their shapes.