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Black holes are areas in the universe where gravity pulls in everything, even light. Nothing can get out and all objects are squeezed into a tiny space. Because there is no light in black holes we cannot see them. But scientists can detect the immense gravity and radiation around them. They are the most mysterious objects in astronomy. Scientists think that the first black holes were formed when the universe began about 13 billion of years ago. Albert Einstein was the first scientist to predi...

Albert Einstein was famous German physicist who became famous for his theory of relativity which he published in the early 20th century. His work was seen as Jewish propaganda and in the 1930s Einstein had to flee Nazi Germany. After arriving in the United States, he became professor at Princeton University and played an important role in the creation of nuclear weapons, to which he was later opposed . He also fought for the rights of European refugees.

Voyager 2 has become the second man-made object to pass the boundary of the solar system and enter interstellar space. It is currently 18 billion km from earth. Its sister ship, Voyager 1 reached this boundary in 2012. According to NASA scientists, the probe can operate for five to ten more years. It is so far away from earth that commands take about 16 hours to reach it. Voyager 2 has entered the heliopause, an area where hot solar winds do not exist any more and the sun's magnetic fiel...

Coca-Cola, the world's largest soft drink corporation, is planning to recycle all of its bottles and cans by 2030. The company wants to take on more responsibility and make its contribution to saving our environment. The company sells over 500 types of fizzy drinks, juices and mineral water around the world. Coca-Cola has announced a campaign called "World Without Waste". It says that food and beverage companies are responsible for much of the litter that can be found on streets and beac...