Zombie satellites and rogue debris threatening existence of ISS

"Millions of pieces of space junk orbiting the Earth present a significant threat to UK satellite systems, which provide the vital services that we all take for granted - from mobile communications to weather forecasting," said Sharma. As he urged mankind to "clean up our act", the official announced new funding to track floating debris, left orbiting the Earth in the wake of a diverse array of missions.

"If we don't take action now, low-Earth orbit could become too perilous for satellites or even humans on the International Space Station", warned the UK Business Secretary. 1 million pounds in investment is being channelled via the UK Space Agency (UKSA) towards seven space-cleaning programmes that will be tackling the rogue debris.

Astronomers estimate that around 160 million pieces of debris are floating around Earth, trapped by the planet's gravity.

Travelling at a speed of approximately 29,000 km/hour (18,000 mph), almost one million fragments are believed to be larger than 1 cm in diameter and present a devastating threat to satellites in the event of a collision.

As a graphic example, a close call was cited from 2019, when a spacecraft operated by the European Space Agency (ESA) needed to dodge a 100 million pounds Starlink satellite.

Furthermore, the experts warn that the impact might trigger a chain reaction that would knock out numerous satellites.

As there is no way of precisely monitoring small pieces of debris potentially on a collision-course with some pricey space infrastructure, with several mega-constellations due for launch, potential incidents could have catastrophic fallout for life on Earth.

There is no underestimating the implications of such a scenario, underscore experts, as modern society relies on satellite services for GPS, mobile communications and weather forecasting.

Currently, only the largest items in orbit can be traced.

However, it is hoped the new programmes will remedy the situation by employing lasers, satellites and artificial intelligence.

Dubbed 'Lift Me Off', one of the new projects will create an AI-powered algorithm to differentiate between junk and currently operating satellites.

Lumi Space, another project, will resort to lasers in tracking and mapping objects.

Companies Deimos and Northern Space and Security will develop cutting-edge optical sensors to track space objects from the UK, while Andor, based in Northern Ireland, will update its astronomy camera to track ever-smaller sized debris.

Graham Turnock, Chief Executive of the UK Space Agency was cited as saying:

"People probably do not realise just how cluttered space is. You would never let a car drive down a motorway full of broken glass and wreckage, and yet this is what satellites and the Space Station have to navigate every day in their orbital lanes. In this new age of space megaconstellations the UK has an unmissable opportunity to lead the way in monitoring and tackling this space junk."

Source: RIA Novosti

Related Links
Debris News
Space Technology News - Applications and Research

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First laser detection of space debris in daylight
Paris (ESA) Aug 07, 2020
Lasers on Earth are used to measure the position of space debris high above, providing crucial information on how to avoid in-space collisions. Until now, this technique has suffered from a fatal flaw. For some time, lasers could only be used to measure the distance to space debris during the few twilight hours in which the 'laser ranging' station on Earth is in darkness, but debris objects high above are still bathing in the last of the Sun's rays. In the same way that the Moon is brightest ... read more