ASTEROIDS :: essays research papers fc

AsteroidsSixty-Five million days ago, 70 percent of life on Earth died. The most conjectural and possible reason this happened was an asteroid. An asteroid bumble the Earth very hard, and in doing this, dirt and dust from the strike stayed in the air and it blocked out sunlight, thats why the dinosaurs died. An asteroid is a rock from outer space. Asteroids give up orbited the Sun along with the planets since the solar system formed about 4.6 zillion years ago, but its only been 200 years since we archetypal discovered them. Meteorites are sm either pieces of asteroids broken take on impact with other asteroids. Most meteorites are rusty brown on the outside, throw off rounded edges from melting as they go through with(predicate) Earths atmosphere, and contain iron. There are 3 different types of meteorites stony, met allic, and stony metallic.92 percents of all asteroids are stone, 6 percent are do of iron and nickel, and the hiatus are a combination. Some meteorites also contain gold, copper, platinum, and carbon. Scientists get a good idea of what asteroids are made of by studying them through telescopes. They can tell what an asteroid is made of by the color and sparkle of the asteroid. A lot of asteroids that we have discovered are very dark and made of stone, but there are shiny ones that are made of nickel and iron. Most big asteroids are ball shaped. Smaller asteroids, which are usually broken off of a larger asteroid, come in a lot of different shapes. All asteroids have craters that form when they weaken or crash into other asteroids. The older the asteroid, the more times it has been hit and the more craters it has.Asteroids can be found orbiting the Sun in a belt between Mars and Jupiter this is called the Asteroid belt or chief(prenominal) belt. The asteroid belt has been said to probably contain millions of asteroids that are all different. There are more than 20,000 numbered asteroids. Some times asteroids get knocked off the asteroid belt. As asteroids revolve around the Sun in elliptical orbits, Jupiters gravity and getting to close to Mars or other asteroid can change an asteroids path, this could send an asteroid out of the asteroid belt and into space across the orbits of other planets. An example of asteroid orbits ever-changing is Mars moons Phobos and Deimos. These were asteroids that went to close to Mars and got caught in its orbit.