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What If You Replaced the Moon With a Black Hole?

A question from a viewer of XKCD’s What If? series: “What would happen if the Moon were replaced with an equivalently-massed black hole? And what would a lunar (“holar”?) eclipse look like?” The answer to the first part of the question is: not that much. But the explanation of

Ancient water clocks

For centuries, time-measuring tools were woefully imprecise. Moving from the Sun to water birthed a revolution in timekeeping - by Aeon Video Watch at Aeon

Aeon

Freedom over death

Death is a certainty. But choosing how and when we depart is a modest opportunity for freedom – and dignity - by Michael Cholbi Read at Aeon

Aeon

Stephen King’s Top 10 All-Time Favorite Books

Image by The USO, via Flickr Commons So you might think that if Stephen King – the guy who wrote such horror classics like Carrie and The Stand – were to rattle off his top ten favorite books, it would feature works by the likes of Edgar Allan Poe, H. P. Lovecraft or maybe J. […]