Will There Always Be a North Star?

These marine invertebrates can solve puzzles, use tools, and camouflage themselves by changing their very skin -- yet they live only three to five years, and die after mating. Learn more about octopuses in today's episode of BrainStuff, based on these articles: https://animals.ho ...  Show more

Iron processing is a benchmark of civilization for good reason -- this metal makes a lot of technology possible. Learn about the history and science of refining iron and steel in today's episode of BrainStuff, based on this article: https://science.howstuffworks.com/iron.htmSee o ...  Show more

Soon after the sun sets on winter nights, if you live in the northern hemisphere you can look into the sky and find the Orion constellation near the eastern horizon. Astrophysicist Sarafina El-Badry Nance has always been drawn to a particular star in Orion: Betelgeuse, a red supe ...  Show more

What are neutron stars, pulsars and magnetars?

See omnystudio.com/listener for privacy inform ...

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

See omnystudio.com/listener for pr ...

Is your compass actually wrong? Neil deGrasse Tyson and comedian Chuck Nice explore magnetic fields, why clocks go clockwise, and how phone numbers got their area codes.

NOTE: StarTalk+ Patrons can listen to this entire episode commercial-free.

Thanks to our Patron ...