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.


Episode 25: How Galaxies Form

February 26th, 2007

Episode 25 of 460 episodes

Our Milky Way is a complex and majestic barred spiral galaxy. But 13.7 billion years ago it began, like all galaxies, from the elementary particles formed in the Big Bang. How did our galaxy grow from nothing to the hundreds of billions of stars we see today?

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