27.6 Galaxies

Galaxies (1 of 3)

A perspective is given on how galaxies were discovered and how we define them today. Duration: 5:27.

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Galaxies (2 of 3)

This lesson introduces the elliptical, spiral, and irregular galaxies and how some of these galaxies may be unusually active in the production of stars or with the presence of a large central black hole. Duration: 9:30.

Mobile Link: http://bcove.me/yoqqrr32

Galaxies (3 of 3)

How galaxies are organized within our observable universe. Duration: 8:38.

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