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1. What is space pollution? List the factors that cause space pollution.
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Space pollution, also known as space debris or orbital debris, refers to the accumulation of human-made objects in Earth's orbit that are no longer in use and pose a threat to operational spacecraft and satellites. The factors that cause space pollution include:1. **Launch of Satellites**: When satellites are launched into space, they often leave behind fragments of their rocket stages and other debris. These fragments can collide with other objects in orbit, creating more debris and contributing defunct and remain in orbit, adding to the debris.3. **Space Debris from Missions**: Various space missions, including those by space agencies and private companies, can leave behind debris. This includes equipment, tools, and other objects that were used during missions.4. **Micro-Meteoroids and Cosmic Dust**: While not directly caused by human activities, these small particles can collide with spacecraft and satellites, causing damage and creating additional debris.5. **Human Activities**: Improper disposal of satellites and other space equipment can contribute to space pollution. For example, if a satellite is decommissioned, it may not be properly de-orbited and could remain in orbit.6. **Collisions**: The increasing number of satellites and space debris increases the likelihood of collisions, which can generate more debris and further exacerbate the problem.Space pollution is a growing concern as the number of satellites and other space-based activities continues to increase. Efforts are being made to mitigate this issue, such as through the development of new technologies for deorbiting satellites and tracking space debris.