How much does planet Earth weigh?

When every minute counts, search-and-rescue dogs can help locate disaster victims far faster than humans alone. Learn about how they're trained in this episode of BrainStuff, based on this article: https://animals.howstuffworks.com/animal-facts/sar-dog.htm/printableSee omnystudio ...  Show more

The tradition of dropping a ball in Times Square to mark the beginning of a new year only goes back about a century. Learn about the history -- plus four weird things that other cities drop instead -- in this classic episode of BrainStuff.See omnystudio.com/listener for privacy i ...  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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