Space Debris: Rocket pieces left in space can cause trouble on Earth

 Space Debris: There is a 6 to 10 percent chance of serious human injury or death over the next decade from rocket fragments left in orbit. Researchers from the University of British Columbia (UBC) in Canada said governments needed to take collective action and ensure that rocket fragments returned to Earth safely after use. This will increase the cost of launch but the risk of life can be reduced. "Is it acceptable to risk human life at the expense of business, or should we talk about security if we can," said Michael Byers, professor in UBC's Department of Political Science and lead author of the study. And here it is important that we can get protection from risk.

 Fragments can re-enter the atmosphere in an uncontrolled manner

When things like satellites are sent into space, the rockets they use sometimes leave parts in orbit, the researchers said. They said that if these discarded parts of the rocket are in a relatively low orbit, uncontrolled can be re-entered into the environment in different ways. Most of the material will dissipate in the atmosphere, but some lethal fragments may hit the ground. The study, published in the journal Nature Astronomy, analyzed more than 30 years of data from a public satellite table and estimated the risk to human life over the next 10 years.

Unused fuel and batteries cause explosion in orbit 

To date, the probability of damage to Earth's surface (or air traffic in the atmosphere) by debris from satellites and rockets has been considered negligible. Most studies of such space debris have focused on the risk posed by defunct satellites in orbit, which may interfere with the safe operation of a working satellite. Unused fuel and batteries also cause explosions in orbit which generate additional waste. But as the number of entries into the rocket launch business increases—and moves from government to private enterprise—it is highly likely that the number of accidents, both in space and on Earth, such as those following the launch of the Chinese Long March 5B, will increase. will also increase

There are a number of technologies that make it entirely possible to control debris re-entry, but they are expensive to implement. For example, a spacecraft may be 'de-energized', allowing unused energy (such as fuel or batteries) to be spent rather than stored after the spacecraft's lifetime has expired. The choice of orbit for the satellite can also reduce the likelihood of debris production. A defunct satellite can be programmed to drop into low Earth orbit, where it will burn up. Attempts are also being made to launch reusable rockets, which, for example, SpaceX has demonstrated and Blue Origin is developing. These create very little debris, although there will be some debris from paint and metal shavings when they return to Earth in a controlled manner.