the earths wind :: essays research papers

ExtrasMeteorsA brilliant meteor, called a fireball, may weigh mevery kilograms, but counterbalance a meteor weighing less than a gram heap produce a beautiful trail. Some of these visitors from space argon bragging(a) enough to survive (at least partially) their trip through the atmosphere and daze the ground as meteorites. Fireballs are sometimes followed by trails of light that detain for up to 30 minutes some, called bolides, explode with a loud loud sound.MeteoroidsThe term meteor comes from the Greek meteoron, meaning phenomenon in the sky. It is used to attain the streak of light produced as matter in the solar dodging falls into Earths atmosphere creating temporary incandescence resulting from atmospheric friction. This typically occurs at heights of 80 to 110 kilometers (50 to 68 miles) above Earths surface. The term is excessively used loosely with the word meteoroid referring to the particle itself without relation to the phenomena it produces when recording the Earths atmosphere. A meteoroid is matter revolving around the sun or any object in interplanetary space that is too small to be called an asteroid or a comet. Even smaller particles are called micrometeoroids or cosmic dust grains, which includes any interstellar material that should happen to enter our solar system. A meteorite is a meteoroid that reaches the surface of the Earth without universe completely vaporized.MeteoritesMeteorites have proven difficult to classify, but the three broadest groupings are stony, stony iron, and iron. The just about common meteorites are chondrites, which are stony meteorites. Radiometric date of chondrites has placed them at the age of 4.55 billion years, which is the approximate age of the solar system. They are considered pristine samples of early solar system matter, although in legion(predicate) cases their properties have been modified by thermal metamorphism or icy alteration. Comets outright we know that comets are lumps of ice and d ust that periodically come into the focalise of the solar system from somewhere in its outer reaches, and that some comets crystallize repeated trips. When comets get close enough to the Sun, heat makes them start to evaporate. Jets of turgidness and dust form long chase after that we can see from Earth. These tails can sometimes be millions of miles long. In 1985-1986, a spacecraft called Giotto visited the most famous comet, Halley, on Halleys most recent visit to the inner solar system.