The Effects Of Asteroids And Its Impact On The Earth Essay

1593 Words Dec 10th, 2016 7 Pages
Asteroids are small, airless rocky worlds revolving around the sun that are too small to be called planets. They are also known as planetoids or minor planets. In total, the mass of all the asteroids is less than that of Earth 's moon. But despite their size, asteroids can be dangerous. Many have hit Earth in the past, and more will crash into our planet in the future. That 's one reason scientists study asteroids and are eager to learn more about their numbers, orbits and physical characteristics. Any one single asteroid has the possibility to erase thousands of years of history and wipeout the humanrace as we know it. Asteroids are large or small chunks of rock and metal flying around space up to speeds of 80 000 km/h. Asteroids are essentially chunks of rock that measure in size from a few feet to several miles in diameter. The largest asteroid, Ceres, is about 590 miles (950 kilometers) wide. Like most asteroids, it lies in the asteroid belt between Mars and Jupiter. Many astronomers believe the belt is primordial material that never glommed into a planet because of Jupiter 's gravitational pull. Other astronomers say the belt is a planet that was broken apart during a collision. These chunks were believed to have formed millions of years ago during the "big bang". These rocks didn’t form any planets and were stuck floating around space on their own or in the gravitation of the asteroid belt. This belt is approximately 300 millionmiles from the Sun and it contains…

Related Documents