(CNN) — A letter written by Albert Einstein that includes the world’s most famous equation is being auctioned with an estimated worth of $400,000. The letter, written by Einstein to the ...

BOSTON (AP) — A letter written by Albert Einstein in which he writes out his famous E = mc2 equation has sold at auction for more than $1.2 million, about three times more than it was expected to get, ...

In this undated photograph, provided by Boston-based RR Auction, shows a letter written by Albert Einstein, in which he wrote out his famous "E = mc2" equation, that sold at auction for more than $1.2 ...

The seven-term Drake equation is used to estimate the number of intelligent civilizations in the Milky Way galaxy. While humanity has yet to find any presence of aliens, the famous mathematical ...

The Drake Equation helps scientists estimate the odds of finding intelligent alien civilizations. It’s an age-old question: Do aliens exist? And what are the odds we’ll make contact? A famous ...

An curved arrow pointing right. E=mc 2 is one of the most famous equations in history. But what does it mean, exactly? David Bodanis, the author of "Einstein's Greatest Mistake," breaks down the ...