Gravitational waves detected

Scientists in the United States recently observed “gravitational waves” that were predicted by Albert Einstein’s general theory of relativity in 1915 (that’s a hundred years ago!) The waves that were observed were generated when two black holes collided and merged into one over a billion years ago. This was the first time scientists have detected gravitational waves. Albert Einstein is considered to be one of the world’s greatest scientists. He was born in Germany, and lived from 1879 to 1955. Here is a video about gravitational waves and another about Einstein.

 

Here is a joke:
Greatest scientists of all times were invited to a reunion …
-Newton said he’d drop in.
-Darwin said he’d wait to see what evolved.
-Edison thought it would be illuminating.
-Einstein said it would be relatively easy to attend.
-Morse said, “I’ll be there on the dot. Can’t stop now, must dash.”

Did you know?

Albert Einstein’s brain was removed after his death and preserved. His brain has been studied by scientists to see what makes a person brilliant like Einstein.

Image Credits: https://www.ligo.caltech.edu/ and The SXS (Simulating eXtreme Spacetimes) Project for the image of the black holes colliding
Sources: https://www.ligo.caltech.edu/, http://www.biography.com