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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.
The Kessler syndrome (also called the Kessler effect, [1] [2] collisional cascading, or ablation cascade), proposed by NASA scientists Donald J. Kessler and Burton G. Cour-Palais in 1978, is a scenario in which the density of objects in low Earth orbit (LEO) due to space pollution is numerous enough that collisions between objects could cause a ...
The space field should be used peacefully, jointly protect the space field from harm, and maximize space utilization through environmental, economic, and security exploration of space. [16] These consensuses also clarify the relationship between space sustainability and international security, that states and individuals explore space for ...
There are 1 million pieces of space junk orbiting Earth right now. Amber Yang is on a mission to clean up space trash: 'We’re being trapped by another layer of pollution' Skip to main content
Particulate pollution is pollution of an environment that consists of particles suspended in some medium. There are three primary forms: atmospheric particulate matter, [1] marine debris, [2] and space debris. [3] Some particles are released directly from a specific source, while others form in chemical reactions in the atmosphere.
Cosmic dust – also called extraterrestrial dust, space dust, or star dust – is dust that occurs in outer space or has fallen onto Earth. [ 1 ] [ 2 ] Most cosmic dust particles measure between a few molecules and 0.1 mm (100 μm ), such as micrometeoroids (<30 μm) and meteoroids (>30 μm). [ 3 ]
Space environment is a branch of astronautics, aerospace engineering and space physics that seeks to understand and address conditions existing in space that affect ...
Air pollution can be a high risk for certain groups, including children under 18, adults over 65, people with chronic heart or lung disease, pregnant women and people with diabetes, according to ...