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-india-destroying-missile-threatens-international-space-station

 
 
Reply Tue 2 Apr, 2019 01:04 pm
https://www.businessinsider.com/nasa-space-junk-india-destroying-missile-threaten-international-space-station-terrible-thing-2019-4
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Type: Discussion • Score: 3 • Views: 436 • Replies: 9
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edgarblythe
 
  1  
Reply Tue 2 Apr, 2019 01:11 pm
India said that it deliberately chose to destroy a satellite in low orbit with the goal of keeping the debris from harming the station or other satellites and that the debris would fall back to Earth and disintegrate.
But Bridenstine said pieces were moving above the station and "that kind of activity is not compatible with the future of human spaceflight."
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blatham
 
  1  
Reply Tue 2 Apr, 2019 01:23 pm
Good post Edgar. It's a rather clear example of why serious international agreements, adequately policed, are increasingly necessary.
edgarblythe
 
  1  
Reply Tue 2 Apr, 2019 01:25 pm
@blatham,
I'm just surprised it took this long for something like that to happen.
blatham
 
  1  
Reply Tue 2 Apr, 2019 01:33 pm
@edgarblythe,
That thought hadn't occurred to me but it's a good one.
farmerman
 
  1  
Reply Tue 2 Apr, 2019 03:38 pm
@blatham,
how soon is the mob gonna be out there selling "protection"
0 Replies
 
Olivier5
 
  1  
Reply Sat 6 Apr, 2019 01:31 am
@edgarblythe,
It has happened before, by the Soviets in the 70's, by the US in the 80's and by China in 2007.
https://en.m.wikipedia.org/wiki/Anti-satellite_weapon
edgarblythe
 
  1  
Reply Sat 6 Apr, 2019 05:44 am
@Olivier5,
I've seen stories like that, but the object of this thread endangered others. I don't think the others were so careless.
Olivier5
 
  1  
Reply Sat 6 Apr, 2019 09:48 am
@edgarblythe,
The 2007 Chinese event was apparently twice as bad that the recent Indian one.

Quote:
On 11 January 2007, the People's Republic of China successfully destroyed a defunct Chinese weather satellite, FY-1C. The destruction was reportedly carried out by an SC-19 ASAT missile with a kinetic kill warhead [...] at an altitude of about 865 km (537 mi), with a mass of about 750 kg (1650 lb). [...]

This event was the largest recorded creation of space debris in history with more than 2,000 pieces of trackable size (golf ball size and larger) officially cataloged in the immediate aftermath, and an estimated 150,000 debris particles.[25][26] As of October 2016, a total of 3,438 pieces of debris had been detected, with 571 decayed and 2,867 still in orbit nine years after the incident.[...]

https://upload.wikimedia.org/wikipedia/commons/9/95/Fengyun-1C_debris.jpg

Source: wiki, mismatch of articles.

In comparison, Nasa had identified 400 pieces of orbital debris and is tracking 60 pieces larger than 10cm in diameter in the case of the Indian kill.

The US military is in total tracking about 10,000 pieces of space debris, nearly a third of which is said to have been created by the Chinese test.


https://www.bbc.com/news/world-asia-india-47783137

But of course they are all bad. It cummulative:

Quote:
The Kessler syndrome (also called the Kessler effect,[1][2] collisional cascading or ablation cascade), proposed by the NASA scientist Donald J. Kessler in 1978, is a scenario in which the density of objects in low Earth orbit (LEO) is high enough that collisions between objects could cause a cascade where each collision generates space debristhat increases the likelihood of further collisions.[3] One implication is that the distribution of debris in orbit could render space activities and the use of satellites in specific orbital ranges impractical for many generations.[3]

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edgarblythe
 
  1  
Reply Sat 6 Apr, 2019 10:19 pm
Well - Okay.
0 Replies
 
 

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