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PostPosted: Sat Nov 19, 2016 11:04 am 
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The head of astronautics research at the University of Southhampton has drawn attention to the ever-increasing amount of space debris in orbit:
"Tackling space debris is one of humankind's greatest environmental challenges, but it is perhaps the one that is least known," he said.
There are reckoned to be some 100 million pieces of manmade debris shrouding the Earth in space. From mere specks of paint, to spent rockets and defunct satellites, even the tiniest piece can potentially cause problems for communications satellites, travelling as they do up to 17,000 mph in orbit.
Some 27,000 items of space junk are more than 10cm wide and are being tracked by Nasa.

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PostPosted: Sat Nov 19, 2016 1:53 pm 
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More likely JSpOC (Military) rather than NASA (Civil).


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PostPosted: Sat Nov 19, 2016 2:16 pm 
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Dear Brian
The space Junk problem was supposedly sorted out about twenty years ago.
However, I don't see any big problem myself because someone reckons in the long term ie within about 20 years, the increase in our upper atmospheric temperatures will conveniently melt any space junk and this will fall like hailstones. The only thing to worry about is not to leave cars parked in the open air because of possible damage to car roofs (or is it rooooves) and car bonnets, which might get dented by the metallic hailstones. Oh! I nearly forgot if you have to go outdoors during a heavy hailstorm it will be best to wear a cycle helmet.
Best wishes from Cliff


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PostPosted: Sun Nov 27, 2016 5:42 pm 
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Dear Brian
A little more seriously !
Stella mentions the space junk problem is Military rather than NASA. I think Stella is probably right, but I gather JSpOC is strictly American (USA), and presumably other countries have their own military space programmes and they are unlikely to co-operate with America with a view to removing space junk - so the problems of space junk will inevitably continue to get worse (?).
On a less serious note - perhaps the next generation of "Advanced Space Drones" will be able to deal with the space junk quite soon.
Best wishes from Cliff


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PostPosted: Mon Nov 28, 2016 12:34 am 
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Everywhere we go we make a mess. And we talk about going to Mars! Bob


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PostPosted: Mon Nov 28, 2016 10:50 am 
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Just to point out that the reference to Nasa searching for space junk was a journalist's goof not mine. :D

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PostPosted: Mon Nov 28, 2016 10:39 pm 
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Dear Brian & Bob
I think Bob is right, and people still talk about colonising Mars - which will probably need an extension of HS2.
Best wishes from Cliff


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PostPosted: Tue Nov 29, 2016 5:31 pm 
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Huge numbers of cubesats are being launched.

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