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Post by moabiter on Sept 18, 2011 10:53:19 GMT -8
Huge Defunct Satellite Falling to Earth Faster Than Expected, NASA Says Date: 16 September 2011 Time: 02:07 PM ET NASA space junk experts have refined the forecast for the anticipated death plunge of a giant satellite, with the U.S. space agency now predicting the 6 1/2-ton climate probe will plummet to Earth around Sept. 23, a day earlier than previously reported... NASA officials expect the UARS satellite to fall over a region somewhere between the latitudes of northern Canada and southern South America, which leaves a vast swath of the world open as a possible re-entry point. About 75 percent of the Earth's surface is covered in water, which makes an ocean splashdown likely, NASA and experts have said. NASA and the Joint Space Operations Center of U.S. Strategic Command at Vandenberg Air Force Base, Calif., are keeping a close watch on the falling satellite, but will only be able to pinpoint its actual crash zone to within about 6,000 miles (10,000 km) about two hours before re-entry. www.space.com/12982-dead-nasa-satellite-falling-earth-sept-24.html
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Post by moabiter on Sept 18, 2011 10:54:33 GMT -8
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Post by clone on Sept 24, 2011 19:58:25 GMT -8
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Post by clone on Nov 24, 2011 17:16:56 GMT -8
Signal picked up from Russia's stranded Mars probe 23 November 2011 Last updated at 03:50 ET Contact has finally been made with Russia's troubled Mars mission, says the European Space Agency (Esa). The agency reports that its tracking station in Perth, Australia, picked up a signal from the Phobos-Grunt probe. Esa is now working with Russian engineers to see how best to maintain communications with the craft. www.bbc.co.uk/news/science-environment-15850516
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Post by clone on Dec 17, 2011 8:45:29 GMT -8
'January re-entry' for Phobos-Grunt Mars probe 16 December 2011 Russia's space agency (Roscosmos) says its unsuccessful Mars probe will fall back to Earth next month. The unmanned Phobos-Grunt spacecraft became stranded in orbit in November. The agency says it expects the toxic fuel on board to burn up on re-entry, but 20-30 fragments of the spacecraft will survive to the surface. Current Roscosmos estimates for the timing of the fall are between 6 and 19 January, but this window will be narrowed nearer the event. www.bbc.co.uk/news/science-environment-16221975
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Post by clone on Dec 17, 2011 8:49:33 GMT -8
Plutonium-238: Use, Origin and Properties We hear a lot about the radioisotope plutonium-238 these days, due to ongoing use of Pu-238 by NASA in satellites and space probes and controversy over that use. The present publicity is bringing to light past uses of plutonium-238 in American and Soviet satellites (which are also controversial) and other uses. When I searched, I found only hints to the origin and properties of Pu-238. danv.50webs.com/pu238.htm
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Post by clone on Dec 27, 2011 1:53:42 GMT -8
Russian has amazing escape as fragment from exploded satellite smashes into his house in COSMONAUT street Last updated at 9:52 PM on 26th December 2011 A man and his wife narrowly escaped being crushed by a fragment of a Russian satellite that crashed into his Siberian home in Cosmonaut Street. In the latest setback for Russia's space programme, a chunk of the Meridian satellite hit the house in the Novosibirsk region of central Siberia and were found in the Ordynsk district. Read more: www.dailymail.co.uk/sciencetech/article-2078638/Russian-communications-satellite-crashes-Earth-launch.html
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Post by EPFL on Feb 15, 2012 21:24:02 GMT -8
'Vacuum Satellite' To Clean Up Space Debris Sky NewsSky News – 2 hours 38 minutes ago A satellite designed to scoop up debris and rocket parts is to be launched by Swiss scientists to clean up space. CleanSpace One would act almost like a vacuum cleaner and is the first installment of a family of satellites designed to clear up debris. uk.news.yahoo.com/vacuum-satellite-clean-space-debris-024007781.html
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Post by brazil on Feb 25, 2012 15:39:47 GMT -8
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Post by randene on Oct 8, 2012 9:11:45 GMT -8
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Post by randene on Nov 14, 2012 7:43:06 GMT -8
Satellites and space debris disrupted by climate change November 12, 2012, 7:00 a.m. Climate change from greenhouse gas emissions might threaten spacecraft as well as people, a scientists suggested on Sunday, providing direct evidence that carbon dioxide from human activity is affecting the outermost portion of the Earth's atmosphere. In a study published in the journal Nature Geoscience, a research team led by John Emmert of the U.S. Naval Research Laboratory's Space Science Division in Washington, described a new method for quantifying increases in carbon dioxide in the hard-to-measure portion of the upper atmosphere known as the thermosphere, which can't be reached by balloons and aircraft. www.latimes.com/news/science/sciencenow/la-sci-sn-climate-change-satellites-debris-20121112,0,3501663.story?track=rss
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Post by ANU on Mar 11, 2014 4:38:28 GMT -8
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Post by anon on Jun 4, 2014 5:35:14 GMT -8
Many of the legal issues involving responsibility and liability should orbital debris collide with a satellite remain unresolved. Regulating the void: In-orbit collisions and space debris Tuesday, May 27, 2014 www.thespacereview.com/article/2520/1- In 1978, the Soviet satellite Kosmos 954 crashed in northern Canada, scattering nuclear material across parts of the Arctic and requiring an extensive cleanup operation. - Many collisions occur within space itself. A recent example was the January 2009 collision, in Low Earth Orbit above Siberia, of the “defunct” Russian satellite Kosmos 2251 with Iridium 33, a privately-owned US satellite. The crash occurred at a relative velocity of 10 kilometers/second, destroyed both satellites and reportedly created a very large field of new debris. - The 2007 Chinese anti-satellite test in LEO may have created “a cloud of more than 3,000 pieces of space debris.” During the Cold War, the intentional destruction of satellites for national security reasons may have had a similar effect.
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Post by clone on Jun 6, 2015 21:19:21 GMT -8
Earth in danger of being surrounded by rings of debris June 3, 2015 Without a comprehensive approach to the problem, within 200 years debris could form rings around the Earth similar to the ones surrounding Saturn. Scientists believe that lasers represent just one of the possible way to clear low Earth’s orbit of unwanted particles. Russia is planning to create the Liquidator satellite scavenger by 2025, which will remove parts from defunct satellites. The Lomonosov satellite, which will observe space debris, is set for launch in December 2015. - rbth.com/science_and_tech/2015/06/03/earth_in_danger_of_being_surrounded_by_rings_of_debris_46605.html
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Post by WT1190F on Nov 11, 2015 18:14:57 GMT -8
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