50 Extremely Rare Pictures Of Famous Historical Figures That Will Completely And Totally Change The Way You Think About Them
The Bible, on display at the Medieval Art Gallery in Warsaw, was printed more than 570 years ago by Johannes Gutenberg, the ...
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Stunning image shows the closest ever Einstein ring
Galactic lenses like this one, which is the closest astronomers have ever found, were predicted by Albert Einstein in 1936 from his theory of general relativity. At the time, he thought such an ...