Describing Cosmology in 1000 Common English Words

Astrophysicist Roberto Trotta turned a thought experiment into a short book, "The Edge of the Sky: All You Need To Know about the All-There-Is."

Trotta has taken the most common 1000 words in english to explain dark matter, dark energy and the early universe. He tells Town Hall Scholar in Residence Steve Scher why.

For more about Trotta's work, go to

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