Does the Earth need a space fence?

Being hit by space junk is rubbish.

Last week, NASA confirmed that the International Space Station may have to be moved or risk being hit by a sizeable lump of Russian space junk. With hundreds of thousands of pieces of debris littering the atmosphere, has our desire for space exploration inadvertently created a volatile and hazardous junkyard?

The danger was posed by defunct Russian military satellite Kosmos 2251, infamous for colliding with US satellite Iridium-33 in February 2009. The incident sent hundreds of pieces of debris spiralling out of control in Earth’s atmospheric orbit, adding to the debris currently tracked by the US Air Force.

Of course, this is an issue entirely of our own doing. Years of launching satellites without an afterthought for the abandoned rocket components have left Earth’s geostationary orbit more congested than the M25 on a Friday evening.

There is, however, a solution. Short of erecting a series of 2,000km-high concrete posts and wooden panels, NASA hopes to track objects orbiting the planet using what it has called the "Space Fence". Three radar sites, with one already chosen to be located on Kwajalein Island, part of the Republic of the Marshall Islands, will help the administration track up to 200,000 pieces of debris simultaneously.

The US military’s current equivalent, the Space Surveillance Network, tracks a catalogue of 15,000-20,000 identified pieces of debris, ensuring that operators of satellites and installations are warned of potential collisions. With a burgeoning number of nations now edging towards becoming space-able this catalogue needs to be expanded, and Space Fence offers to do just that.

Not only will objects be tracked and future collisions reconstructed, but the system’s processing power will be capable of determining the best possible launch window for satellites and shuttles. Space Fence will essentially act as NASA’s very own traffic management system.

At an expected cost of $6.1bn, Space Fence represents the single largest investment from the US Air Force in Space Situational Awareness, and what is likely to become one of the most expensive clean-up jobs in history.

Liam is the aerospace and defence features writer for the NRI Digital network.

Japan Aerospace Exploration Agency astronaut Aki Hoshide on board the International Space Station. Photograph: Getty Images/NASA

Liam Stoker is the aerospace and defence features writer for the NRI Digital network.

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Watch: The evidence Nigel Farage said money sent to the EU should go to the NHS

After the EU referendum result, Nigel Farage said it was a "mistake" for Leave to suggest funds could go to the NHS. But what's this?

Remember Friday? (I know: it's not necessarily a pleasant thing to do, but bear with me.) On Friday, hours after the result of the EU referendum was announced, Nigel Farage appeared on Good Morning Britain and said that the Leave campaign advertising which linked the extra "£350m a week" Brexit would allegedly gift us with the NHS was a "mistake".

Sure, it was on posters, and emblazoned on a bus, and he didn't speak up to disabuse anyone of the notion. But let's give Farage the benefit of the doubt and pretend he does sorely regret the fact that, through no fault of his own, members of the electorate may have been led to believe that that money would be put into healthcare. It must be tough, when you ought to be high on your victory, to have to answer for other people's mistakes

Ah. Hold that thought.

It looks like the Independent has unearthed a video of Nigel Farage on television before the vote, and  strange thing  he tells Hilary Benn that the money currently being sent to Europe should be spent on, er, "schools, hospitals and the NHS".

Well, this mole isn't sure what to say. Maybe Farage doesn't remember this specific moment? Maybe when he said "schools, hospitals and the NHS" he actually meant something different, like "negotiating our exit from the EU", or "paying to access the common market despite no longer being a member"? Or maybe when he said that money should be spent on these things, he didn't mean it necessarily would be, and it would have been entirely unreasonable for the voting public to make such an absurd leap?

All I can suggest is that you watch and decide for yourself, dear reader.

I'm a mole, innit.