Center for Astrophysics, Harvard and Smithsonian


The Science of Monday’s Big “Gravitational Wave” Thing Explained in Two Minutes

Big Bang news left you lost? This Minute Physics video might help

A pigeon trap, on view at the Air and Space Museum, used by Nobel Prize winners Penzias and Wilson to remove the birds roosting in the radio antenna's large horn.

How Two Pigeons Helped Scientists Confirm the Big Bang Theory

For decades, astronomers had debated how the universe began. Then, in 1964, they had their "Eureka!" moment

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