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Morticia
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27-12-2019, 04:16 PM
11

Re: Satellite constellations - A threat to Earth's view of the Universe

Erm ... is that expensive NASA tool bag still floating around in orbit?
And another hunk of junk ... that fridge the astronauts dumped out of the space station?
I wouldn't mind but us Earthlings have to dispose of our old fridges safely. They should be made to take it to the tip like everyone else.
Donkeyman
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27-12-2019, 04:42 PM
12

Re: Satellite constellations - A threat to Earth's view of the Universe

What causes orbital decay?
is it too much sugar in your diet?
BDonkeyman!
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27-12-2019, 04:54 PM
13

Re: Satellite constellations - A threat to Earth's view of the Universe

Originally Posted by Morticia ->
Erm ... is that expensive NASA tool bag still floating around in orbit?
Tool kit dropped from space station is orbital junk no more
By John Matson on August 3, 2009

https://blogs.scientificamerican.com...on-2009-08-03/

And another hunk of junk ... that fridge the astronauts dumped out of the space station?
I wouldn't mind but us Earthlings have to dispose of our old fridges safely. They should be made to take it to the tip like everyone else.
AFAIK, the fridge got incinerated, too ....
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27-12-2019, 05:03 PM
14

Re: Satellite constellations - A threat to Earth's view of the Universe

Ah, I did wonder. So the tool bag came home (incinerated) in 2009.
It's a magical fascinating place .... though I did snigger when I read once about skywatchers wishing on a shooting star ... which was more likely a frozen waste dump chucked out of the space shuttle.
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27-12-2019, 05:12 PM
15

Re: Satellite constellations - A threat to Earth's view of the Universe

And not before time ....

European Space Agency to launch space debris collector in 2025.
Robotic junk collector will be first mission to remove item of debris from orbit.


Now there's a bit of innovative job creation. Bet Trump wishes he'd thought of it first for out of work NASA boffins.
https://www.theguardian.com/science/...lector-in-2025
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27-12-2019, 05:26 PM
16

Re: Satellite constellations - A threat to Earth's view of the Universe

Originally Posted by Morticia ->
And not before time ....

European Space Agency to launch space debris collector in 2025.
Robotic junk collector will be first mission to remove item of debris from orbit.


Now there's a bit of innovative job creation. Bet Trump wishes he'd thought of it first for out of work NASA boffins.
https://www.theguardian.com/science/...lector-in-2025

The ClearSpace-1 mission, scheduled for launch in 2025, will cost €120m and will grab a single piece of junk. But the agency hopes the mission will pave the way for a wide-reaching clear-up operation, with Esa’s director general calling for new rules that would compel those who launch satellites to take responsibility for removing them from orbit once they are retired from use.

The target for ClearSpace-1 is a piece of junk called Vespa, which was left in an orbit around 800km above the Earth by ESA’s Vega launcher in 2013. Vespa weighs 100kg – around the size of a small satellite – and was selected because it has a simple shape and sturdy construction, which make it unlikely to fragment when it is grabbed.

The “chaser” ClearSpace space probe will be launched into the target orbit where it will track down Vespa, grab it using a quartet of robotic arms and drag it out of orbit, with Vespa and the chaser both burning up in the atmosphere on the way down to Earth.
I used to have a Vespa 150GS which weighed 100kg and I'm sure I left that parked in someone's back bedroom in 1969 .....

It's good news about a "clear-up", though .....
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27-12-2019, 05:36 PM
17

Re: Satellite constellations - A threat to Earth's view of the Universe

Originally Posted by Omah ->
I used to have a Vespa 150GS which weighed 100kg and I'm sure I left that parked in someone's back bedroom in 1969 .....

It's good news about a "clear-up", though .....
At over 120million a peice it sounds very affordable and practical
to me?
Donkeyman!
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27-12-2019, 09:45 PM
18

Re: Satellite constellations - A threat to Earth's view of the Universe

Again, look at the scale of earth compared to the space junk, with 480,000 pieces no bigger than a softball.....

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27-12-2019, 10:04 PM
19

Re: Satellite constellations - A threat to Earth's view of the Universe

Originally Posted by Donkeyman ->
Whilst l agree with you generally OGF, l differ when it comes to
this p!anets atmosphere, lf you see the planet from space the
depth of the atmosphere compared to the size of the planet you will
see that it seems to be very thin in relation to the globe, in fact it
looks very mimimal and vulnerable? So l do believe it may be
possible for us, especially as we proliferate, to have some sort of
influence on it? However l keep an open mind on whether we can
compete with the forces of nature!
Donkeyman!
Okay, let's put things in perspective......



So its generally accepted that Earth's atmosphere stretches approximately 60 miles out into space. Only habitable without breathing apparatus for Four miles high.

Now lets look at man's distribution on the surface of the Earth.
71% is covered by oceans.......
27% is mountains or deserts and uninhabitable by humans.
Man could possibly inhabit the remaining 2% but doesn't....
We are but a small speck on the face of this planet, and the chances of us having any effect on climate, other than locally is ridiculous......
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28-12-2019, 12:04 AM
20

Re: Satellite constellations - A threat to Earth's view of the Universe

What goes up, must come down, spinning wheels (you know the rest)
 
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