How much does planet Earth weigh?

In South Carolina, the first school for formerly enslaved people during the Civil War shifted to become a center for social activism during the Civil Rights movement, and stands today as a landmark of African American culture and history. Learn more about the Penn Center in this ...  Show more

Cramming for a test or other deadline may give you decent short-term results, but research shows it sacrifices long-term comprehension and memory. Learn why study methods like spacing and interleaving are better in this classic episode of BrainStuff, based on this article: https: ...  Show more

Daniel talks about how astronomers can measure or deduce the mass of a star, and why it controls its fate.

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Daniel and Jorge explain how we might be able to listen to a new kind of gravitational hiss and what secrets it could reveal. Learn more about your ad-choices at https://www.iheartpodcastnetwork.comSee omnystudio.com/listener for privacy information. 

How many stars can we see in the sky? Thousands? Billions?

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What does it mean for gravity to make waves? How do we see them?

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