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Scientists the USA have seen something amazing space the very first time. They saw gravitational waves. These are waves that form space and travel outwards. The waves are similar to how ripples water move outwards after you throw a stone a lake. The gravitational waves space start when two giant space objects hit each other. Albert Einstein first spoke about waves space 1916 when he made his General Theory Relativity. One hundred years later, the researchers have proved that Einstein's theory was right. The researchers used powerful technology to see the gravitational waves. Einstein did not have this technology. He used his genius to predict that the waves existed.

Scientists say the discovery the gravitational waves is one the most important discoveries ever. Dr Lawrence Krauss, Arizona State University, said the discovery was as great as the invention the telescope. He said it would let scientists see many new things space. It would also answer many questions our universe. Dr Krauss said: "It has opened a new window the universe, just like the telescope." He added that: "Using gravitational waves to explore the universe will allow us to see things we could have never seen before….It will also allow us to explore objects the universe we’ve never seen before." He said it was beautiful that discovery happened 100 years after Einstein's prediction.

 
 

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