Episode

Astronomy Cast

Wizzard Media

Science & Medicine, Natural Sciences

Chart Positions

Science & Medicine 25
Natural Sciences 10

Astronomy Cast brings you a weekly fact-based journey through the cosmos.

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Ep. 97: Galaxies

July 14th, 2008

Episode 100 of 464 episodes

This week we're going to look at some of the biggest objects in the Universe: galaxies. It was the discovery of galaxies in the early 20th century that helped astronomers realize just how big the Universe is, and how far away everything is. Let's learn how galaxies formed and how they evolve and change over time, merging with the neighbors. And what the future holds.

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