Why do we need a 400-pound soccer ball on the orbit of the Earth?




Why do we need a 400-pound soccer ball on the orbit of the Earth?


This small but incredibly heavy satellite called LARES looks and works exactly like a ball, which often hung under the ceiling clubs twenty years ago (and in a place where time stands still – and still hangs). It reflects lasers for its mirrors, and this, according to the Italian scientists must prove Einstein’s hypothesis that the Earth distorts the space-time as they rotate.

One of the most important conditions of general relativity is the dragging of inertial frames or Lense-Thirring effect. Einstein said that the rotation is sufficiently massive object would distort space-time, thus affecting the body and the nearby (a phenomenon known as precession), and therefore mathematics of this phenomenon will be much greater than the complexity of classical Newtonian physics.

However, to fix these effects was incredibly difficult, it can manifest itself in one case in several trillion. The only way to fix it for sure – turn to something more massive, like a black hole, well or create ultrasensitive device and bring it into orbit. Certainly better than attract a black hole in the solar system .

Солнечная система

The same conclusion was reached by scientists Antonio Paolozzi and Ignazio Kyufollini, creating LARES – «satellite laser relativity.” Sphere the size of a soccer ball does not contain any electronic components and engines. LARES is covered with 92 reflectors being monitored by terrestrial laser.

Despite its size, the ball weighs about 400 pounds. This is the first aerospace structure created from tungsten alloy – and perhaps the most dense object, flying in the solar system. Its mass, as scientists believe, is to create a significant effect of precession. By tracking the position of LARES, and after analyzing his progress, scientists hope to see evidence of Einstein’s hypothesis.

In the space left LARES February 13, 2012.

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Tags: Albert Einstein , General Theory of Relativity , Solar System .

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