How Big Does a Meteoroid Have to Be to Make I...

The @ sign goes by many names today, but it's only so commonplace because of medieval merchants and one 1970s programmer. Learn more about the at sign (or arroba, Klammeraffe, strudel, grisehale, or gül) in this episode of BrainStuff, based on this article: https://people.howstuf ...  Show more

A human fetus doesn't develop retinas until around gestational week 28. Learn how researchers have tried to figure out what babies can see in the few remaining weeks before they're born in this classic episode of BrainStuff, based on this article: https://health.howstuffworks.com ...  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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How many stars can we see in the sky? Thousands? Billions?

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Daniel and Jorge talk about how megaconstellations of satellites might spoil our view of the Universe. Learn more about your ad-choices at https://www.iheartpodcastnetwork.comSee omnystudio.com/listener for privacy information. 

Last year’s NASA mission proved it was possible to knock an incoming near-Earth object off course. But that creates debris—which might also be a threat.Read this story here.