Satellites: Adverse Effects on Astronomy

Debate between Lord Harris of Haringey and Lord Vallance of Balham

Wednesday 20th November 2024 Lords Chamber

[Lord Vallance of Balham (Lab)]

My Lords, the question about the number of things circulating in space and the implications of that is very important indeed. The number of satellites projected to be launched by 2030 could be as high as 400,000, with estimates ranging from 50,000 to 400,000. This is a very big issue. The amount of space debris is increasing as well, which also contributes to the problem. The UK promotes the sustainable use of space and there is a range of initiatives, from regulation and standards to research, space observation and monitoring capabilities, as well as technologies for active debris removal and in-orbit servicing to try to make things last longer, all of which we will continue, along with the notion of satellite refuelling. This is a growing problem and one that we have raised with the United Nations body and will continue to do so.

[Lord Harris of Haringey (Lab)]

My Lords, I refer to my interests in the register as chair of the National Preparedness Commission. As an economy, we are increasingly reliant on positioning, navigation and timing signals from satellites in space. The Minister participated in the event organised by the Royal Institute of Navigation this morning, which I also spoke at. Could he share with us the Government’s plans around the vulnerability that our national economy and all our businesses will face if there is disruption to PNT signals, either because of space junk or solar activity, or malign activity by another nation? How well prepared are we to deal with those issues?

[Lord Vallance of Balham (Lab)]

This is a critical question. The Royal Institute of Navigation has recently—in fact, today—launched a paper on how to prepare for this. It is something that all critical national infrastructure will be urged to look at, to have a plan for what would happen in the event of GPS failure. There is a longer-term question about the alternatives to space-based navigation and there is active work going on in the UK on terrestrial approaches, including the use of quantum systems to try to get a robust secondary approach to PNT.