How Much Starlight Has Been Emitted Since the...

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

How dark matter was discovered, and what it might be

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Can physicists discover new particles by watching how muons wiggle in magnetic fields?

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

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Why can't we travel faster than light? Can we ever reach the stars?

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