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e. Space debris (also known as space junk, space pollution, [ 1 ]space waste, space trash, space garbage, or cosmic debris[ 2 ]) are defunct human-made objects in space – principally in Earth orbit – which no longer serve a useful function. These include derelict spacecraft (nonfunctional spacecraft and abandoned launch vehicle stages ...
Kessler syndrome. Space debris populations seen from outside geosynchronous orbit (GSO). There are two primary debris fields: the ring of objects in GSO and the cloud of objects in low Earth orbit (LEO). The Kessler syndrome (also called the Kessler effect, [1][2] collisional cascading, or ablation cascade), proposed by NASA scientists Donald J ...
Space debris, or space junk, consists of discarded launch vehicles or parts of a spacecraft that float around in space hundreds of miles above the Earth, risking collision with a satellites or a ...
Once space junk is up there, it can be hard to get it down. NASA advises the best way to mitigate the issue is to prevent unnecessary debris from entering orbit to begin with.
Overview. There were 190 known satellite breakups between 1961 and 2006. [2] By 2015, the total had grown to 250 on-orbit fragmentation events. [3] As of 2012 there were an estimated 500,000 pieces of debris in orbit, [4] with 300,000 pieces below 2000 km (LEO). [1] Of the total, about 20,000 are tracked. [1]
List of space debris fall incidents. Space debris usually burns up in the atmosphere, but larger debris objects can reach the ground intact. According to NASA, an average of one cataloged piece of debris has fallen back to Earth each day for the past 50 years. Despite their size, there has been no significant property damage from the debris. [1]
ClearSpace-1. The ClearSpace-1 (ClearSpace One) mission is an ESA Space debris removal mission led by ClearSpace SA, a Swiss startup company. The mission's objective is to remove the PROBA-1 satellite from orbit. The mission aims to demonstrate technologies for rendezvous, capture, and deorbit for end-of-life satellites and to build a path to ...
NASA considered the spacewalk dangerous with potential risk of electrical shock. Since construction started, the International Space Station programme has had to deal with several maintenance issues, unexpected problems and failures. These incidents have affected the assembly timeline, led to periods of reduced capabilities of the station and ...