Question

Oque e e-wast e space junk

Answer 1

Resposta:

Space debris (also known as space junk, space pollution,[1] space waste, space trash, or space garbage) is a term for defunct human-made objects in space—principally in Earth orbit—which no longer serve a useful function. This can include nonfunctional spacecraft, abandoned launch vehicle stages, mission-related debris and fragmentation debris. Examples of space debris include derelict satellites and spent rocket stages as well as the fragments from their disintegration, erosion and collisions, such as paint flecks, solidified liquids from spacecraft breakups, and unburned particles from solid rocket motors. Space debris represents a risk to spacecraft.[2]

Space debris is typically a negative externality—it creates an external cost on others from the initial action to launch or use a spacecraft in near-Earth orbit—a cost that is typically not taken into account nor fully accounted for in the cost[3][4] by the launcher or payload owner.[5][1][6] Several spacecraft, both manned and unmanned, have been damaged or destroyed by space debris. The measurement, mitigation, and potential removal of debris are conducted by some participants in the space industry.

As of October 2019, the US Space Surveillance Network reported nearly 20,000 artificial objects in orbit above the Earth,[7] including 2,218 operational satellites.[8] However, these are just the objects large enough to be tracked. As of January 2019, more than 128 million pieces of debris smaller than 1 cm (0.4 in), about 900,000 pieces of debris 1–10 cm, and around 34,000 of pieces larger than 10 cm were estimated to be in orbit around the Earth.[9] When the smallest objects of human-made space debris (paint flecks, solid rocket exhaust particles, etc.) are grouped with micrometeoroids, they are together sometimes referred to by space agencies as MMOD (Micrometeoroid and Orbital Debris). Collisions with debris have become a hazard to spacecraft; the smallest objects cause damage akin to sandblasting, especially to solar panels and optics like telescopes or star trackers that cannot easily be protected by a ballistic shield.[10

Explicação:

Answer 2

Resposta: Significa literalmente: lixo lixo espacial

Lixo espacial é qualquer objeto lançado no espaço orbital da Terra que não tenha mais utilidade, tais como satélites desativados, fragmentos de satélite ou de foguetes, e até mesmo instrumentos e ferramentas perdidos por astronautas durante missões espaciais.

Explicação: