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Annalisa Riccardi

Space View Project - 2 views

www.spaceviewnetwork.com

shared by Annalisa Riccardi on 14 Nov 12 - No Cached
  • Annalisa Riccardi on 14 Nov 12
     
    Crowdsourcing space debris monitoring
LeopoldS

Meteorite Crashes In Russia, Panic Spreads (Updating) - 5 views

gizmodo.com/...rashes-in-russia-panic-spreads

shared by LeopoldS on 15 Feb 13 - No Cached
  • Joris _ on 15 Feb 13
     
    Latest update: the European Space Agency says their experts "confirm there is no link between the meteor incidents in Russia and asteroid 2012DA14 flyby tonight". How did they find this? As they did not see this one coming, how could they come to that conclusion that early!
  • ...5 more comments...
  • johannessimon81 on 15 Feb 13
     
    As you can see from the videos of this meteorite it is coming in from an east to south-east direction (i.e. the direction of the sunrise, more or less). 2012DA14 is coming from due south as you can see here: http://www.wired.com/wiredscience/2013/02/how-to-watch-asteroid-2012-da14/ So the two objects seem to be coming from different directions - at least that would be my explanation.
  • Joris _ on 15 Feb 13
     
    My point is, that if you want to come to such a conclusion (that it is not rubble) you need to be able to construct back the orbits of both objects. 2012DA14 has been observed for one year only, but it is well enough. When the meteor has been observed for the first time, such that we knew its orbit? has it been observed before? if yes, why the impact has not been predicted?
  • johannessimon81 on 15 Feb 13
     
    If you can show that they come from different directions you know that they are not associated, even if you don't reconstruct their orbits.
  • Joris _ on 15 Feb 13
     
    I don't think so. If both objects were part of the same, they would be on different but intersecting orbits anyway, hence different directions. Anyway, I am not knowledgeable in atmospheric entry ... But, with so few information about the object, I am surprised they are 100% certain it is not related to DA14. I think science requires more cautions ... With only the direction they are 100% sure, while the probability of such event is itself extremely small, I am amazed... They can't even predict with 100% certainty where a space debris will fall... plus, nobody consider the object being part of a bigger one that broke up during early entry (which has not been observed) ... so many uncertainties and possible hypothesis... and i am not the only one :) http://www.infowars.com/russian-meteor-linked-to-da14-asteroid/
  • LeopoldS on 17 Feb 13
     
    was not that evident to me also but apparently with the right understanding it was quite clear; was amazed also how quickly NASA has published the likely trajectory of the russian object - have a look at it: quite evident that these are not coming from the same body
  • Joris _ on 17 Feb 13
     
    yes, now i get my 100% certainty with the reconstructed orbits nothing else (http://wiki.nasa.gov/cm/blog/Watch%20the%20Skies/posts/post_1361037562855.html) ... I still think that esa anouncemement was highly premature but with a high probability of being right...
  • Ma Ru on 26 Feb 13
     
    Some more results on the topic (link to an arxiv article inside): http://www.bbc.co.uk/news/science-environment-21579422
LeopoldS

Civilians try to pull retired NASA craft from space - Pittsburgh Post-Gazette - 0 views

www.post-gazette.com/...201406150175

cleanspace debris MAS

shared by LeopoldS on 16 Jun 14 - No Cached
  • LeopoldS on 16 Jun 14
     
    nice story ...
Dario Izzo

Back to Earth with a splash! Fisherman finds car-sized fragment of a SPACE ROCKET in a ... - 4 views

www.dailymail.co.uk/...CE-ROCKET-Brazilian-river.html

rocket MAD arianne debris

shared by Dario Izzo on 02 May 14 - No Cached
  • Dario Izzo on 02 May 14
     
    ooops ....
  • Thijs Versloot on 02 May 14
     
    Where is the sticker saying "if found, please post this item unstamped to the following address"?
  • Ma Ru on 07 May 14
     
    Yup, it's ours... Still, better take it out of the river than in the face. Such a big one especially.
Francesco Biscani

Slashdot News Story | Pacific Trash Vortex To Become Habitable Island? - 2 views

news.slashdot.org/...tex-To-Become-Habitable-Island

shared by Francesco Biscani on 15 Jul 10 - Cached
Nicholas Lan liked it
  • Nicholas Lan on 16 Jul 10
     
    cool. space station made from space debris?
Luís F. Simões

Russia To Spend 2 Bln Dollars For Space Clean-Up - 1 views

www.spacedaily.com/...rs_For_Space_Clean_Up_999.html

debris removal nuclear

shared by Luís F. Simões on 26 Nov 10 - No Cached
LeopoldS liked it
  • "The corporation promised to clean up the space in ten years by collecting about 600 defunct satellites on the same geosynchronous orbit and sinking them into the ocean subsequently,"
  • He said the cleaning satellite would work on nuclear power and be capable to work up to 15 years.
  • Energia said that the company would complete the cleaning satellite work-out and assembly by 2020 and test the device no later than in 2023.
  • Ma Ru on 27 Nov 10
     
    Hehe... as far as I know the Russians, they won't miss a chance to "clean up" a few enemy satellites too...
Nina Nadine Ridder

Spaceflight Now | Breaking News | Military agency studying space garbage service - 5 views

www.spaceflightnow.com/...12debris

space_debris Catchers_Mitt

shared by Nina Nadine Ridder on 15 Dec 09 - Cached
  • Juxi Leitner on 15 Dec 09
     
    that Prof. Klinkrad that gave the space debris lecture here was there as far as I know (at the conference/meeting mentioned)
Eduardo Martin Moraud

On whether to re-brand space junk as "historical heritage"... - 3 views

www.latimes.com/...nk29-2010jan29,0,5698181.story

shared by Eduardo Martin Moraud on 29 Jan 10 - Cached
LeopoldS liked it
  • Eduardo Martin Moraud on 29 Jan 10
     
    For those working on space debris removal... Watch out for moon-protection activists that will accuse you of distroying a historical heritage: "There are countless places on Earth that have been awarded protection to preserve their historic or cultural importance. The moon has none. But that may be about to change...."
Tobias Seidl

Self-assembled artificial cilia - PNAS - 1 views

www.pnas.org/...1844.abstract

BIO micro selfassembled

shared by Tobias Seidl on 03 Feb 10 - Cached
  • Tobias Seidl on 03 Feb 10
     
    Cilia are hairs driven by molecular motors. They are found in monocellular organisms, etc. If we can build such things artificially, we have micro-pumps etc. Any space usability?
  • Nicholas Lan on 08 Feb 10
     
    carlo's distributed actuator study originally considered cilia as well as peristaltic motion if i remember right. i suppose you might still think about debris transport for digging applications. Originally there was an idea for thermal transport aswell which, it turns out, was bollocks.
Juxi Leitner

Rogue satellites to be cleared from Earth's orbit by German robots | Science | The Obse... - 1 views

www.guardian.co.uk/...-robots-clear-rogue-satellites

satellites orbital debris security technology

shared by Juxi Leitner on 14 Oct 09 - Cached
  • Their robots will dock with failing satellites to carry out repairs or push them into "graveyard orbits", freeing vital space in geostationary orbit.
  • meant that the German robots will be "ready to be used on any satellite, whether it's designed to be docked or not".
  • Juxi Leitner on 14 Oct 09
     
    I am not sure the military will like this...
Joris _

Orbiting Dust Storm Could Remove Space Junk - 6 views

www.technologyreview.com/...26634

MAD Space Debris

shared by Joris _ on 13 Apr 11 - No Cached
LeopoldS liked it
  • Joris _ on 13 Apr 11
     
    A good example of how loosing perspective makes so-called "novel ways" actually "rubish ways"
  • LeopoldS on 15 Apr 11
     
    here the paper: http://arxiv.org/abs/1104.1401 well spent defence funding ....
koskons

Japan developing wooden satellites to cut space junk - 1 views

www.bbc.com/...business-55463366

technology space

shared by koskons on 06 Jan 21 - No Cached
LeopoldS liked it
  • koskons on 06 Jan 21
     
    Couldn't find more details on this but sounds interesting.
  • LeopoldS on 07 Jan 21
     
    interesting indeed as a concept and to explore how far one can go to overcome some of the natural deficiencies of wood. regarding the main purpose of debris avoidance, it's typically not the structure that survives re-entry and one would have to see the environmental effect of what would be released in the atmosphere when burning.
LeopoldS

Effective Space Solutions Ltd - YouTube - 3 views

www.youtube.com/watch

debris

shared by LeopoldS on 21 Sep 14 - No Cached
  • LeopoldS on 21 Sep 14
     
    israeli startup betting on an orbital tug to put telecom sats into graveyard orbit ...
Joris _

Giant Nets Could Some Day Capture Space Trash - PCWorld - 2 views

www.pcworld.com/...e_day_capture_space_trash.html

MAD debris

shared by Joris _ on 16 Aug 10 - Cached
  • Joris _ on 16 Aug 10
     
    It was also presented during SpaceTech.
  • Juxi Leitner on 18 Aug 10
     
    sorry reposted that again, since I work thru my emails backwards ;)
Joris _

Spaceflight Now | Breaking News | Sweden's Prisma satellites go their separate ways - 1 views

spaceflightnow.com/...11prisma

MAD technology space

shared by Joris _ on 13 Aug 10 - Cached
  • exotic green propellant maneuvering systems
  • In the two months since launch, controllers have powered up the satellites' navigation and formation flying equipment, tested its green propellant thruster, and successfully navigated around orbital debris threats.
  • a smorgasbord of payloads
LeopoldS

impressive amateur footage by Thierry Legault of UARS before reentry - 2 views

legault.perso.sfr.fr/uars_110915.html

space debris

shared by LeopoldS on 23 Sep 11 - No Cached
  • LeopoldS on 23 Sep 11
     
    impressive amateur footage! - shows how much can be done by amateurs!
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