By Andrei NAZARENKO, Dr. Sc. (Tech.), Program Study Center, Russian Academy of Sciences Available statistics tell us that an annual average of about 100 man-made space objects have been orbited by various countries over the last 30 years. Combined with the bits and pieces left from all sorts of misfirings and explosions during launchings and from various assembly and disassembly operations in orbit, a total of 600 to 700 pieces of junk enter near-Earth space each year. Russian and American experts have catalogued over the aforesaid period close upon 22,000 man-made objects, ranging from 10 to 30 cm in size. According to their count some 14,500 such objects have burned down in dense lower atmosphere, but the remaining 7,500 of these objects are still hurtling over our heads. And only 5 percent of them is really useful equipment and all the rest is nothing but junk. To make the picture even grimmer, experts tell us that the rate of junk accumulation in space is twice as high as the rate of its "self- purification". And most of the junk is orbiting the Earth at altitudes from 600 to 1,600 km - the two "belts" wherein most of the man- made satellites are operating. Experts laid special emphasis on the excessive pollution of the geostationary orbit wherein more than 1,000 objects of different kind are concentrated. Used-up space probes can come as close as 10 km one to the other and this imposes limitations on the uses of the geostationary orbit. The first to sound the alarm were NASA experts in the United States where a special study group was set up in 1981 from representatives of various agencies concerned. These studies were joined by the European Space Agency some ten years ago. And as for Russia, the problem has not escaped the attention of its experts who mainly come from Moscow State University, the Institute of Space Studies of the Russian Academy, the Central Research Institute of Engineering, the Central Research Institute of the Ministry of Defense, the V ... Читать далее

Эта публикация была размещена на Либмонстре в другой стране и показалась интересной редакторам.

Полная версия: http://biblioteka.by/m/articles/view/JUNKYARDS-IN-ORBIT
Қазақстан Желіде · 2145 days ago 0 1983
Professional Authors' Comments:
Order by: 
Per page: 
  • There are no comments yet
Library guests comments

0 votes
Қазақстан Желіде
Астана, Kazakhstan
10.09.2018 (2145 days ago)
Permanent link to this publication:


© biblio.kz
Library Partners

BIBLIO.KZ - Digital Library of Kazakhstan

Create your author's collection of articles, books, author's works, biographies, photographic documents, files. Save forever your author's legacy in digital form. Click here to register as an author.

Editorial Contacts
Chat for Authors: KZ LIVE: We are in social networks:

About · News · For Advertisers

Digital Library of Kazakhstan ® All rights reserved.
2017-2024, BIBLIO.KZ is a part of Libmonster, international library network (open map)
Keeping the heritage of Kazakhstan


US-Great Britain Sweden Serbia
Russia Belarus Ukraine Kazakhstan Moldova Tajikistan Estonia Russia-2 Belarus-2

Create and store your author's collection at Libmonster: articles, books, studies. Libmonster will spread your heritage all over the world (through a network of affiliates, partner libraries, search engines, social networks). You will be able to share a link to your profile with colleagues, students, readers and other interested parties, in order to acquaint them with your copyright heritage. Once you register, you have more than 100 tools at your disposal to build your own author collection. It's free: it was, it is, and it always will be.

Download app for Android