Giant balloons could be cleaned the spacegarbage

Everyone knows the helium balloons lifting capacity, but could also be an effective way to bring non-operational satellites back to Earth, according to a team of engineers.
The satellites that no longer work represent a hazard to spacecraft orbiting the earth. In 2009, one of them crossed the path of an operational satellite, destroying both aircraft leaving behind thousands of pieces of space junk.
One way to prevent these collisions is to make the satellites start your engines at the end of its useful life to enter Earth's atmosphere, which would be incinerated. But to achieve this you need to give them extra fuel, which means an additional mass increases the price of launch.
Faster Destruction
The balloons would be a cheaper way to solve the problem the spacegarbage, this team of engineers. Kristin Gates Global Aerospace Corporation in Altadena, California, presented the idea Tuesday at the Astrodynamics Specialists Conference in Toronto, Canada.
Any new satellite could be launched into space with a balloon attached to the cover. Once the satellite reaches the end of its useful life, would fill the balloon with helium or other gas, increasing the drag force when the ball hits the Earth's atmosphere.

A balloon of 37 meters could take a satellite to an altitude that would allow its disintegration in less than a year, while without the balloon would take decades, the team of engineers.

Balloons for clean the space garbage

According to Brian Weeden, the concept is feasible but would not work with all the satellites. For his part, Kerry Nock, President of the Secure World Foundation in Washington, concedes that the concept is possible to do, but with limitations. The balloon would only work below 1500 km, but adds that this means that it would cover a very congested area, which lies between 800 and 1,500, in which the accident occurred, 2009