太空垃圾是什麼?要英文~

太空垃圾是space debris or orbital debris

Space debris or orbital debris, also called space junk and space waste, are the objects in orbit around Earth created by humans that no longer serve any useful purpose. They consist of everything from entire spent rocket stages and defunct satellites to explosion fragments, paint flakes, dust and slag from solid rocket motors, coolant released by RORSAT nuclear powered satellites, even deliberate insertion of small needles, and other small particles

太空垃圾是什麼?Space debris or orbital debris, also called space junk and space waste, are the objects in orbit around Earth created by humans that no longer serve any useful purpose. They consist of everything from entire spent rocket stages and defunct satellites to explosion fragments, paint flakes, dust and slag from solid rocket motors, coolant released by RORSAT nuclear powered satellites, even deliberate insertion of small needles, and other small particles
According to Edward Tufte's book Envisioning Information, space debris objects have included a glove lost by astronaut Ed White on the first American space-walk, a camera Michael Collins lost near the spacecraft Gemini 10, garbage bags, a wrench and a toothbrush. Sunita Williams of STS-116 also lost a camera during an EVA. Most of those unusual objects have re-entered the atmosphere of the Earth within weeks due to the orbits where they were released and their small sizes. Things like these are not major contributors to the space debris environment. On the other side, explosion events are a major contribution to the space debris problem. About 100 tons of fragments generated during approximately 200 such events are still in orbit. Space debris is most concentrated in low Earth orbit, though some extends out past geosynchronous orbit.
Space debris has become a growing concern in recent years, since collisions at orbital velocities can be highly damaging to functioning satellites and can also produce even more space debris in the process, called Kessler Syndrome. Some spacecraft, like the International Space Station, are now armored to deal with this hazard. Also astronauts on EVA are vulnerable; see Extra-vehicular activity.
The first official Space Shuttle collision avoidance maneuver was during STS-48 in September 1991. A 7-second reaction control system burn was performed to avoid debris from a Kosmos 955 satellite.
Clouds of very small particles are not as serious but cause erosive damage, like sandblasting
Sandblasting or bead blasting[1] is a generic term for the process of smoothing, shaping and cleaning a hard surface by forcing solid particles across that surface at high speeds; the effect is similar to that of using sandpaper, but provides a more even finish with no problems at corners or crannies. Sandblasting can occur naturally, usually as a result of the particle blown by the wind causing eolian erosion, or artificially, using compressed air. An artificial sandblasting process was patented by Benjamin Chew Tilghman on October 18, 1870.
Historically, the material used for artificial sandblasting was sand that had been sieved to a uniform size. The silica dust produced in the sandblasting process caused silicosis after sustained inhalation of dust. Sandblasting may now only be performed in a controlled environment using ventilation, protective clothing and breathing air supply (as it is shown in the top image).
Other materials for sandblasting have been developed to be used instead of sand; for example, steel grit, steel shots, copper slag, glass beads (bead blasting), metal pellets, dry ice, garnet, powdered abrasives of various grades, powdered slag, and even ground coconut shells or corncobs have been used for specific applications and produce distinct surface finishes.

Space rubbish

好容易啫! ! !

Space Rubbish is people's rubbish which can't fire or throw,we throw it to the space by spacecraft.