A Space & astronomy forum. SpaceBanter.com

If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below.

Go Back   Home » SpaceBanter.com forum » Space Science » Policy
Site Map Home Authors List Search Today's Posts Mark Forums Read Web Partners

Space will be unusable in 20 years unless junk is cleaned up says expert



 
 
Thread Tools Display Modes
  #1  
Old May 31st 17, 05:36 PM posted to sci.space.policy
[email protected]
external usenet poster
 
Posts: 609
Default Space will be unusable in 20 years unless junk is cleaned up says expert

"Space will be unusable within 20 years unless something is done to clean up the
170 million pieces of debris orbiting the Earth and constantly growing in number.

That's the opinion of Dr Ben Greene, CEO of Space Environment Research Centre
(SERC), who today (31 May) hosted an event in Canberra, Australia, to figure out
how to clean up Earth's orbital space."

See:

http://www.ibtimes.co.uk/space-will-...expert-1624141

Ads
  #3  
Old June 1st 17, 03:33 AM posted to sci.space.policy
Bob Haller
external usenet poster
 
Posts: 3,197
Default Space will be unusable in 20 years unless junk is cleaned up says expert

On Wednesday, May 31, 2017 at 5:15:43 PM UTC-4, Fred J. McCall wrote:
wrote:

"Space will be unusable within 20 years unless something is done to clean up the
170 million pieces of debris orbiting the Earth and constantly growing in number.

That's the opinion of Dr Ben Greene, CEO of Space Environment Research Centre
(SERC), who today (31 May) hosted an event in Canberra, Australia, to figure out
how to clean up Earth's orbital space."

See:

http://www.ibtimes.co.uk/space-will-...expert-1624141


Space is big. Really, really big.


--
"Some people get lost in thought because it's such unfamiliar
territory."
--G. Behn



big certinally. however the debris tend to expand and collide and create even more junk
  #4  
Old June 1st 17, 11:32 AM posted to sci.space.policy
Fred J. McCall[_3_]
external usenet poster
 
Posts: 9,545
Default Space will be unusable in 20 years unless junk is cleaned up says expert

bob haller wrote:

On Wednesday, May 31, 2017 at 5:15:43 PM UTC-4, Fred J. McCall wrote:
wrote:

"Space will be unusable within 20 years unless something is done to clean up the
170 million pieces of debris orbiting the Earth and constantly growing in number.

That's the opinion of Dr Ben Greene, CEO of Space Environment Research Centre
(SERC), who today (31 May) hosted an event in Canberra, Australia, to figure out
how to clean up Earth's orbital space."

See:

http://www.ibtimes.co.uk/space-will-...expert-1624141


Space is big. Really, really big.


big certinally. however the debris tend to expand and collide and create even more junk


And much of it tends to reenter over time all by itself. Think about
it, Bob. Total energy has to be conserved. So in a collision, part
of the energy of the system goes to breaking things up. A big chunk
of the debris have a lower orbital velocity than the original pieces.
That chunk of stuff will dip lower into the atmosphere and lose more
velocity to air drag. It eventually reenters and burns up. Much of
what's left will be disturbed to orbits we don't care much about.


--
"Some people get lost in thought because it's such unfamiliar
territory."
--G. Behn
 




Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Space fishing: Japan to test 'magnetic net' for space junk Rick Jones Policy 0 February 7th 14 05:50 PM
space junk Andrew Nowicki[_2_] Policy 1 July 31st 10 02:11 PM
US Spacesuits unusable bob haller Space Shuttle 16 June 4th 04 03:48 AM
Famed Iowa space expert opposes Bush space plan Aozotorp Policy 22 January 26th 04 12:08 AM


All times are GMT +1. The time now is 12:04 AM.


Powered by vBulletin® Version 3.6.4
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
Copyright 2004-2018 SpaceBanter.com.
The comments are property of their posters.