On April 12, Russia celebrated the 50th anniversary of Yuri Gagarin’s space flight. Mr. Gagarin was a Soviet pilot and cosmonaut. He was the first human being to journey into outer space. On April 12, 1961, he became the first man in space when his Vosto
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The ozone layer is very important for us. This is because the layer of gases protects the Earth from damaging ultraviolet (UV) rays. UV rays can cause sunburn, cataracts, and skin cancer. They can also damage vegetation.
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Many people all over the world use cell phones every day. They are charged by electricity. To our surprise, however you will be able to charge your cell phone with your heartbeat soon! Recently, American scientists at Georgia Institute of Technology devel
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Mars is the most Earth-like planet in the Solar System. It is the fourth planet from the Sun. The planet is named after the Roman god of war, Mars. It is also called the Red Planet because of its reddish color. Mars can easily be seen from Earth with the
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Tsunamis are very powerful. They can sweep away ships, houses, buildings, and cars. A strong tsunami can even wipe out a whole village! It actually happened in Japan recently. Korea is not really safe from tsunamis, either. But most Koreans still don’t k
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On March 9, the space shuttle Discovery returned to the Earth after a successful trip to the International Space Station (ISS). It was Discovery’s 39th and final mission. It is NASA’s oldest space shuttle. Discovery ended its career as the world’s most
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Have you ever seen an aurora? It is a natural light display in the sky. Auroras are usually seen at night particularly in the Polar Regions. Therefore, they are also called the “northern lights” or “polar lights.” They are often seen in Canada, Alaska
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Bears sleep for several months in the winter to save energy. For example, Alaskan black bears hibernate for up to 7 months a year. They don’t eat or drink anything during their hibernation. To our surprise, they are still very healthy when they wake up i
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On February 24, a very interesting marathon was held in Osaka, Japan. It wasn’t a marathon for humans but for robots! It is the first robot marathon in the world! A total of four two-legged androids participated in the meaningful event. The tallest one i
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There are eight planets in the solar system: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. Do you know what the coldest planet is? Let me give you a hint. It is the 7th planet from the Sun. Yes, it’s Uranus! Unlike the other large pl
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