Space Debris Ever since mankind’s dream of conquering space has become reality, many man-made machines have been floating in space. Various types of satellites are constantly orbiting our Earth....

Silicon valley Silicon is an essential element used in the manufacture of electrical appliances or technology products. It is from this silicon that Silicon Valley, the technology capital of...

Earth day The earth is the home of millions of animals, including humans. But at present, our house is experiencing global warming, pollution, nuclear waste and more populations. Apart...

Atomic bombs There are still more than 15,000 atomic bombs worldwide. Which is enough to destroy the entire world and human civilization by its destructive power. About 90 percent...

Niagara falls Niagara Falls is one of the most natural wonders of the world. Niagara is the largest waterfall in the world in terms of water flow. About four...

Moon of earth People have been searching for life outside the world since ancient times. It continues to the present time, and still continues in the future. At present,...

Kepler space telescope Billion billions of stars in our universe, but we only know a little about the sun. In some of the planets, life exists only on earth....

Sea in the world The Caspian Sea is a wonderful lake between Europe and Asia. It is the largest reservoir in the world surrounded by land. In terms of...

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