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SI Prefixes are used in the International System of Units to represent powers of ten, allowing for the quantification of very large or very small values across diverse scientific and engineering fields. Each prefix corresponds to a specific decimal multiplier or fraction, helping to simplify notation and convey scale efficiently.
Space debris mitigation involves implementing strategies to minimize the creation of space debris and reduce the risk it poses to operational spacecraft and satellites. This includes designing spacecraft to minimize debris generation, implementing end-of-life disposal plans, and actively removing existing debris from orbit.
Orbital decay is the process by which a satellite or other object in orbit gradually loses altitude due to factors like atmospheric drag and gravitational perturbations, eventually leading to re-entry or collision with another body. This phenomenon is crucial for understanding satellite lifespan, space debris management, and the sustainability of space operations.
End-of-Life Management involves the strategic planning and execution of processes to responsibly retire or dispose of products, systems, or technologies once they reach the end of their useful life. It aims to minimize environmental impact, ensure compliance with regulations, and maximize the recovery of valuable materials through recycling or repurposing.
Controlled reentry refers to the deliberate and planned return of a spacecraft or satellite back to Earth, ensuring it lands in a predetermined location to minimize risk to populated areas. This process requires precise calculations and maneuvers to manage the spacecraft's trajectory and velocity as it re-enters the Earth's atmosphere.
Spacecraft propulsion systems are crucial for maneuvering spacecraft in space, providing the necessary thrust to change velocity and direction. These systems range from traditional chemical rockets to advanced ion and nuclear propulsion technologies, each with unique advantages and limitations depending on mission requirements.
Space sustainability focuses on ensuring that the use of outer space is conducted in a way that preserves the space environment for future generations. This involves mitigating space debris, promoting international cooperation, and developing technologies and policies that support the long-term viability of space activities.
Active Debris Removal (ADR) is a critical space sustainability initiative aimed at mitigating the growing threat of space debris by actively removing defunct satellites and debris from orbit. It involves a range of technologies and methods, such as robotic arms, nets, harpoons, and lasers, to capture and deorbit debris, ensuring the long-term viability of space operations and reducing collision risks.
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