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Cool interesting facts about mercury,doggy training school,rubber dog collar manufacturers - PDF Review

Category: Dog Trainer Los Angeles | Author: admin 15.01.2015
Mercury was known since at least Sumerian times roughly 5,000 years ago, where it was often associated with Nabu, the god of writing. Mercury speeds around the sun every 88 Earth days, traveling through space at nearly 112,000 mph (180,000 kph), faster than any other planet. Mercury is the closest planet to the sun and has a thin atmosphere, no air pressure and an extremely high temperature. The first spacecraft to visit Mercury was Mariner 10, which imaged about 45 percent of the surface and detected its magnetic field. Mercury, the closest planet to the sun, has been studied by multiple spacecraft throughout the years. Even though Mercury is the closest planet to the sun, its surface can still be extremely cold. Scientists think that a huge asteroid slammed into Mercury about 4 billion years ago, creating a giant crater about 960 miles (1,545 km) across.
Scientists have discovered that Mercury has streams of particles sloughing off its surface.


Mercury has no atmosphere and no known satellites, perhaps because of its proximity to the Sun. Mercury is often identified with the Greek god Hermes, the messenger of the gods in Roman mythology.
Mercury is the closest planet to the sun, the maximum distance from the Sun = 70 million km (43.5 million miles). Mercury is known as a terrestrial planet consisting of about 70% metallic and 30% silicate material. First it was Copernicus who noticed orbiting planet in the early 16th century; and then Galileo was the first to observe Mercury during the 17th century. As such, it circles the sun faster than all the other planets, which is why Romans named it after the swift-footed messenger god Mercury. Mercury was also given separate names for its appearance as both a morning star and as an evening star. Its oval-shaped orbit is highly elliptical, taking Mercury as close as 29 million miles (47 million km) and as far as 43 million miles (70 million km) from the sun.


This is because Mercury is too close to the Sun and the brightness would harm the electrical components of the telescope. About 4 billion years ago, an asteroid roughly 60 miles (100 kilometers) wide struck Mercury with an impact equal to 1 trillion 1-megaton bombs, creating a vast impact crater roughly 960 miles (1,550 km) wide.
If one could stand on Mercury when it is nearest to the sun, it would appear more than three times as large as it does when viewed from Earth.
When it arrived in March 2011, MESSENGER became the first spacecraft to orbit Mercury, where it continues to study the planet. Although scientists don't see volcanic activity on Mercury's surface now, many think it could be a good explanation for the way the planet looks today.



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